You also can, see the analytics stories of the CAPTCHA Requests in the reCAPTCHA admin panel. In the instance code, we now have proven how one can add Google reCAPTCHA v2 checkbox within the contact form. Not solely the contact type but additionally you can use our code to integrate Google reCAPTCHA any forms of form within the web utility.
But I guess some people just lie so much that they forget how to tell the reality. There aren’t any challenges anymore and it simply gives you a rating primarily based on whether it thinks the consumer is a bot/spammer, then you can do whatever with that. Personally if the rating is low sufficient I simply place the consumer in a restricted person group that needs approval on certain site actions. I’ve written on this multiple occasions earlier than, so if anyone finds this fascinating, just do an HN search for my username and Ticketmaster collectively. I hear a lot of AI is, google dropped the ball right here. I find it ironic that out of all issues google, it was translate.google.cn to be given an exemption.
You can define the language of the Invisible reCaptcha that can ignore the consumer’s browser preferences. Moreover, adjust the reCaptcha button design and location on the page settings for each retailer view, and get a reCaptcha that completely fits your store. You can adjust how reCaptcha appears on your web site pages by choosing probably the most appropriate design.
Aside from that broad shot, 10 years ago you enter the aforementioned square freely, not solely after going through a ‘police’ security check, luggage x-rayed, IDs checked. The big names Facebook/Twitter/Youtube/Google are blocked, and the services beneath them. However it is a blacklist of blocked not a whitelist of accessible. Putting google analytics traction in a header of a federated blog, meaning it’s truly not federated, is indeed a silly pain. China web is restricted, however it is just restricted ‘enough’ for the current power. I like to scrape and save content that will disappear.
This part might be displayed when the chosen model is the reCaptcha v2. After you selected the version of the reCaptcha, configure the way in which it will be displayed on the website. IP Whitelist – specify IP’s one per line if you want to whitelist them. Invisible Captcha shall be disabled for the desired IP addresses. Now your PC should be clear of the adware software liable for Captcha-verification.techniques commercials. We counsel that you hold AdGuard and Zemana Anti-Malware .
Google Recaptcha In Laravel Application
// Success may be true or false relying upon captcha validation. Add this code right after loading the scripts in HTML net page. The motion name permits you to have a detailed break-down of data within the Google admin console. It’s additionally used to verify the reCAPTCHA response on the server side, which we’ll see a bit later. The subscribe_newsletter_submit.php file handles the shape submission and does the obligatory validation. First, go to the reCAPTCHA admin panel to create a hyperlink which presents you with a sort asking you for a few particulars, as proven in the following screenshot.
The GDPR restricts the terms they will use, for example. These do not really apply to captcha, after all, beneath current interpretations. Unless you dont wish to entry to whatever is behind a sites captcha, you might be signing as much as solving their ai cv issues.
Since Google’s, Microsoft’s, and IBM’s speech-to-textual content methods seem to work the most effective, these are already included in queryAPI.py. You’ll have to set the username and password as required; for Google’s API, you’ll have to set an environment variable with a file containing your Google software credentials. Since the changes to ReCaptcha prevent Selenium, a browser automation engine, unCaptcha2 uses a display clicker to move to sure pixels on the display and transfer across the page like a human. There is definitely work to be accomplished right here – the coordinates must be up to date for every new consumer and isn’t the most strong. These changes were initially profitable in defending in opposition to the original unCaptcha attack.
Thanks for studying and please depart any comment under or contact should you encountered any issues. Note that Captcha for Forms is a free add-on, so you agreed that the outline should include the phrases Protected by xfanatical. Once you might be done with the script editor, return to your kind. The add-on may dysfunction underneath a number of Google Account sign-in.
The included jQuery perform is optionally available, although it does create a a lot better person prompt expertise in this demo. Until now, I was working with Google Recaptcha v2, but now I want to update my WebApp using the lastest version . Finally, the operate checkAnswer will read the unique ID and evaluate the submitted answer to the reply on the sheet. Then it will send a pass or fail back to the shopper-side.
I even have used a customized profile, with custom cache path. I actually have all my regular extensions that I have put in on my profile. My person agent is unspoofed and it is no totally different from my regular browsing experience. There’s nothing in the request headers that might recommend it is any completely different from a regular browser.
Before adding reCAPTCHA v2 checkbox to your site, you have to register your site and get reCAPTCHA API keys. reCaptcha version 1 used to point out a couple of phrases in an image and the person needed to enter the phrases in a box to prove they don’t seem to be “bots”. If you’re referring to utilizing the captcha code in an html5 type, no.
would possibly get you, and/or your users, sued over the 578 patent infringement within the US. In short, Recaptcha isn’t a captcha, however a stalker disguised as a captcha. By default, it doesn’t verify your humanity at all, but fingerprints your browser and cookies and matches it together with your past actions throughout the online. It is a kind of ‘Login by Google’ — only a way more harmful one.
The fonts that you want to use will go into thefontsdirectory. Now, you merely should add the following HTML code above theSend Messagebutton from our earlier tutorial oncreating a contact form in HTML and PHP. We have same validation script as we now have seen in jQuery contact type tutorial. So, the next code shows only the validation of the captcha field. Captcha code in a type is used for ensuring that the form is submitted with handbook intervention without any tools or packages.
View the source code of this web page if you’re undecided how to add the above code. You can edit the colors in the css code you’ll add in step #1. In our instance 2captcha apk above, if the proper quantity is entered within the form, you may be rewarded with a new quantity to enter.
For example, a CAPTCHA would possibly embrace a sequence of shapes and ask the person which shape amongst a number of choices would logically come subsequent. The problem with this method is that not all people are good with these sorts of problems and the success rate for a human user can drop beneath 80 p.c. Similarly, it’s unwise to build a CAPTCHA that does not distort letters and numbers ultimately. An undistorted sequence of characters is not very safe. Many laptop packages can scan an image and acknowledge simple shapes like letters and numbers. The first step to making a CAPTCHA is to have a look at the other ways people and machines course of information.
The Chrome will display the reset settings prompt as proven on the image above. The adware software can alter your Chrome settings without your knowledge. You may even see an undesirable website as your search supplier or home page, extra extensions and toolbars.
A hyperlink to Google Re-Captcha admin console is provided just below the edit subject of the location key in the settings web page of Re-Captcha Jetpack plugin. There, we have to add the website where the Captcha code might be placed. In order to insert Google Re-captcha code, I will use a plugin called Re-captcha Jetpack which can be downloaded or put in from this web page.
You will see a captcha code question being generated and refreshed in each minute. If you have no concept how to add them, comply with this article, How to Add an Apps Script to Your Google Docs. Of course, case-delicate captchas open the door for much more complicated letters.
In the previous tutorial, we have seen how to add captcha in PHP. If you are not in a position to create image using php, higher to look into this primary. @imagecreate() i am utilizing this operate for this function.
It’s your job to type the correct series of letters right into a type. If your letters match the ones in the distorted image, you move the take a look at. Google’s Gmail service requires new users to enter a CAPTCHA earlier than creating an account. URL – that is helpful for fields that require the person to enter their website address and it even matches the upcoming TLDs like .directory or .restaurant.
Instead, it returns likelihood scores between 0.0 (one hundred% bot) and 1.0 (a hundred% human) from all actions in your website, and it’s as much as you / administrator to resolve if it comes from a bot. Well, Invisible reCaptcha does not generally want any responsive tweaks in most cases. Simply, as a result of there isn’t a longer checkbox that users really should click. Second reason is that even if you use inline badge show possibility, it’s solely 256 pixels extensive, which can fit perfectly on any modern cellular system display screen. For example, old noCaptcha was implemented as a further input inside protected type, whereas now it is bind directly to the shape’s submit button.
The entire idea of CAPTCHA is predicated on the belief that solely a human would cross this check and bot or automated scripts would fail. I checked the font file and every thing as it is in your demo. Hi Jon, Captcha compares the code with the session worth. Kindly make sure that session is enabled on your host. Sometimes periods are not in a position to move from one web page to a different, on this case contact your hosting supplier. Thanks on your detailed directions on how to add a Google reCaptcha code to WordPress!
I have a 99% project completion rate and a 4.99 reputation (out of max 5.0 from greater than 1138 tasks from a period of 12 years. Thanks. Showing Text and Logical captcha will increase the chance of killing your conversion rate as a result of these types trigger confusion and annoyance. is an clever and sensitive plugin that doesn’t depend on the ReCaptcha technology. Advanced safety, invisibility, and straightforward configuration are three main components that assist WPBruiser outweigh different plugins. It all the time works behind the scene to ensure that your WordPress site is spam free and nicely-secured.
Nothing is changed in the background in your server facet and captcha’s response protocol. Invisible Captchas, each as a concept and design solution, is not something new or exclusive to Google. First ideas had been hidden extra kind fields, that were often crammed-up by dumb bots, however skipped by people.
You can display a simple textual content-based mostly test, by default or use ReCaptcha to make it more tricky. One special factor about this plugin is that a captcha only goes to look after a remark is submitted. On prime of that, you can activate the plugin at numerous pages and themes. Besides ProfilePress and MailOptin, No CAPTCHA reCAPTCHA helps WooCommerce which protects lots of your forms in opposition to spam, bugs, and unauthorized entry.
Now, run the project and you will capable of see captcha when you hit Submit button, as talked about below. Add the talked about div given under anywhere between kind start and finish tag. Create an ASPX page and design your form, as proven under. Open the link mentioned below and click on Get recaptcha button, as shown under.
If Google can tell which requests got here from which device, they could only block the abuse devices and never everything going by way of your proxy. For http you can ensure all requests to Google get an X-Forwarded-For header. It might be Google would entirely ignore that header, you can really solely discover out by trying. If you are somewhat counting on an online proxy auto detection script, then you possibly can replace the script to consider the hostname before deciding on whether to make use of a proxy or direct connection. You are proper, I’m unsure precisely what factor is inflicting the system to have to enter the captcha again. It very properly might be time, we must do some more testing to search out out.
However, the professionals outweigh the cons in this state of affairs and I would suggest it in case you are on the lookout for a quick method to bypass CAPTCHA. Alternatively, you can even tryI’m not robotic captcha clicker which mechanically clicks on the “I’m not robot” checkbox as quickly because the web page hundreds. Buster is a Chrome extension which authenticates reCAPTCHA for you. The extension is basically simple and effective, you go to a website and click the reCAPTCHA button. IT would load a popup window and offer you photographs to pick out. Buster provides a button to that popup which you can click on to authenticate the CAPTCHA.
So, what I did, in Chrome open incognito mode, then browse a site that has the brand new Google CAPTCHA and tick the box. Well, it did not get me by way of, instead it exhibits a series of pictures and asked me to select pictures related to at least one image. You could also double examine in case your proxy is sending all info to Google, which may assist Google determine clients.
I couldn’t find any current controls and the API is easy so I created my own. Populate both fields, click on on Register, and you’re done. On the subsequent screen, you’ll receive both a Site Key and a Secret Key. For the needs of this tutorial, we simply need the previous.
The characters might be different, however they should be slightly rotated and a mixture of black and white. As you possibly can see, I’m utilizing some fonts I downloaded from Google to get some variation in the characters. There is a padding of 15 pixels on each side of the image. The leftover house—one hundred seventy pixels—is split equally among all of the CAPTCHA letters. Your CAPTCHA background ought to now look much like the following image.
Site Key – This key’s used within the HTML code of the reCAPTCHA widget. After the submission, your site will be added and the reCAPTCHA keys will be generated. The Site Key and Secret Key must be specified within the script on the time of calling Google reCAPTCHA API. In the instance code, the following functionality shall be carried out to show the Google reCAPTCHA integration with PHP. Google reCAPTCHA v2 supplies an easy way to shield your web kind or net page from getting spam. Google reCAPTCHA can be easily built-in into the web site using PHP.
Computers lack the sophistication that human beings have in terms of processing visible data. We can take a look at a picture and select patterns more simply than a computer. The human mind sometimes perceives patterns even when none exist, a quirk we name pareidolia. Ever see a shape in the clouds or a face on the moon? That’s your brain attempting to affiliate random info into patterns and shapes.
Blocking spam and bots from your website is essential, not solely for your site however the customers as well. At instances data is taken from customers like their email ids. With these plugins, you possibly can eradicate spam and safe your web site giving a safe expertise to your customers.
Google Recaptcha V3 is invisible captcha whereas the V1 V2 Recaptcha requires consumer motion to finish the captcha. If you do not see API key fields within the Verification tab, Google reCAPTCHA has already been enabled in your site, both in Advanced Settings or in a single different type. You only should enable Google reCAPTCHA as quickly as in your site to add it to types. There are numerous decisions could be discovered to add CAPTCHA performance within the website. The Google reCAPTCHA is the easiest choice to add a CAPTCHA drawback to the shape within the website.
We selected to wait 6 months after the initial disclosure to provide the Recaptcha staff time to deal with the underlying architectural points in the Recaptcha system. The Recaptcha group is conscious of this attack vector, and have confirmed they’re okay with us releasing this code, despite its current success rate. I’ve just arrange the brand new google recaptcha with checkbox, it’s working fantastic on entrance end, nevertheless I do not understand how to deal with it on server aspect utilizing PHP.
Google Captcha is a Recaptcha Captcha plugin in WordPress that prevents spam entries but allows genuine customers to entry with ease. The person just has to confirm whether or not is human or not. Below is a list of Top 11 greatest captcha plugins for WordPress. Though there are plenty nonetheless we now have picked out one of the best so you’ll be able to add Captcha to WordPress and defend your web site. Once the person entered invalid captcha, the PHP captcha validation script will return false. Then, it will send the error message to replace the UI as proven beneath.
I noticed that each time a new captcha is used, it adds a new column to the google sheet that the form posts solutions to. Can you change how the add-on works so that the captcha values usually are not pushed to the shape? The addition of an extra column for each type submission doesn’t make lots of sense. In this model, you only want to copy bundle.js quite than bundle.js and index.html. As different customers reported copying the index.html file hangs the pc, this model move this HTML file to the cloud storage. As a draw back, it’ll request from you an extra permission of connecting external service.
Later, over the years, we extra-fortified it with further security measures, all clear to humans, designed particularly to turn a kind-spamming business into an unprofitable distress. While every of them was simply understandable to people, the random use of multiple Captcha technology algos made the generated captchasextremely tough to move routinely. Unfortunately, as a result of Google’s work in browser automation detection, this model of unCaptcha does not use Selenium. As a result, the code has to navigate to particular components of the screen.
The script itself incorporates an inbuilt doPost perform that acts as the main operate. When this operate is included and the script is revealed as an online app, an HTTP POST request despatched to the script will run this perform. So every time fetcher is run, this operate known as. We’re a place the place coders share, keep up-to-date and grow their careers.
In this instance, I have used the third technique for invoking Google’s invisible reCaptcha service. On web page load, the Google’s invisible reCaptcha is invoked and rendered in a DIV on an HTML form. While rendering, the callback function shall be called by sending the response token. This token shall be validated in the PHP code to examine whether or not it is set or not.
You can decide which version of reCaptcha might be used together with v2 I’m not robotic checkbox, v2 invisible or v3. In addition, you might be allowed to add multiple captchas on the identical web page. This plugin also lets you add conditional login captcha option after varied login makes an attempt.
The focus of this tutorial will be on combating spam. The 2CAPTCHA service renders a response within the type of OK
Before starting, I wish to point out this tutorial is for display screen reader customers, and directions are supplied with keyboard navigation solely in mind. If your customers can’t solve these primary math issues then perhaps you don’t need them commenting on your threads anyways. These provide you with simple to read numbers that have to be added to be able to get past the CAPTCHA. This CAPTCHA by Picatcha offers the user with an elementary alternative of selecting the proper image that they’re asked to identify. They by no means get harder than fundamental pictures so you won’t have to fret too much about your users not having the ability to depict the difference between them and the inaccurate photographs.
However, a greater means is to retailer these keys in your internet.config file. The library supports Google’s reCATPCAH API version 1 and version 2 in a seamless trend. To swap between the two APIs, all you need is to set1 or 2 as a price to the recaptchaApiVersion app settings key. What I cannot understand nicely, is what is the use of checkbox captchas when the algorithm has already detected that you are a human.
If you’re an Internet Service Provider , explain to your customers why they should uninstall these VPNs. After registration, you could be redirected to captcha keys and an easy information on how to implement it. Now, must you hit captcha.take a look at or regardless of you set as your handle throughout the earlier steps, you will notice the laravel improvement homepage. In the above strains, captcha.examine is the online deal with that we’ll hit via the browser.
We really dream a few spam-free world, hopefully it’ll become a actuality at some point. Similarly, reCaptcha v2.0 object recognition verification could be theoretically overwhelmed with Google’s personal Vision API, which can recognize objects in photographs and return them to the top-user . Another downside that we’ve observed is should you use a number of captchas on web page , bottomright/bottomleft badges shall be multiplied and stacked one over another. When you hover over one, the second will nonetheless be behind it, semi-transparent.
The Google reCAPTCHA library requires you to register keys on your space earlier than you can really use it. In the subsequent part, we’ll see how to register your site with Google to get a site key and site secret. Google reCAPTCHA is one of the finest protection in your feedback. A important variety of your customers can now attest they’re human without having to resolve a CAPTCHA.
The most typical sort of CAPTCHA (displayed as Version 1.0) was first invented in 1997 by two teams working in parallel. This type of CAPTCHA requires someone to correctly consider and enter a sequence of letters or numbers perceptible in a distorted image displayed on their display. Because the test is run by a computer, in contrast to the standard Turing test that is administered by a human, a CAPTCHA is sometimes described as a reverse Turing test.
- Site secret is used in the Html code your site and servers to customers.
- You can study more aboutwriting textual content and drawing shapes with GDin certainly one of my earlier tutorials.
- The latest version goes to be invisible – i.e. it simply “works” and not using a questionnaire.
- The pro model is suitable with Contact Form 7, BuddyPress and WooCommerce.
You need to register your site domain in the Google reCAPTCHA Admin to get Site Key and Secret Key. To clarify the Invisible reCAPTCHA implementation process, we will construct a contact type with Google Invisible reCAPTCHA. Once the user solves the reCAPTCHA and submits the shape on your web site, the worth of g-recaptcha-response subject is posted to the controller of server facet.
In order to keep the same construct for testing as production there needs to be some sort of toggle in the software. By default the useCaptcha setting is enabled, but within the check setting you disable this in the configuration file. QA have automated this process, but if the business introduce NCRC into the shape, then this will prevent QA from being able to automate the application. Browse different questions tagged captcha bot or ask your own query.
In all different cases, the function will return the string with the error message. You might need a theme where „feedback.php“ is coded incorrectly. CAPTCHA is one important way to safe your site, however not the one method. Learn more about security.Does CAPTCHA should be such a horrible User Experience?
This plugin is simply appropriate to combine the basic captcha plugin. If you’re working a WordPress site, the good news is you’ll be able to easily distinguish these poisonous bots by putting in a captcha plugin. As an online developer, you need to have a fundamental understanding of the captcha first and the the reason why they are used commonly. However, if I get the net driver to click on the examine box I get fading photographs. You can ask dev staff to add CAPTCHA code as title in markup, then you’ll be able to access this title and bypass the CAPTCHA, but solely within the testing setting. Is your recaptcha script triggering before the recaptcha is loaded?
For some purpose it stopped working and the recaptcha seems all over the place. When users verify the “I’m not a robotic”, an Ajax request might be automatically sent to Google reCAPTCHA service and receives an authentication code and it’s hosted on a Hidden subject of type. All that users should do is examine on the “I’m not a robot” as a substitute of having to learn illegible inscription which is created by traditional CAPTCHA. When the web page finishes loading, the operate fetcher is called. This operate accepts three parameters; parameter one is an object, parameter two is context, and parameter three is a operate. First for when the page has finished loading and also you need a brand new equation – new photographs – to complete the captcha.
To see unCaptcha working for yourself, you will need to alter the coordinates for your display decision. unCaptcha2, like the unique model, is meant to be a proof of idea. As Google updates its service, this repository is not going to be up to date. As a outcome, it is not expected to work sooner or later, and is more likely to break at any time. You’ll additionally have to set your credentials for whichever speech-to-text API you choose.
If the pictures used usually are not from the web, then they would be restricted in quantity, and one may create a database of them. I do not suppose the submitting corporations are actively making the forms more durable to fill out by hand, however the issue is that the IRS has no incentive to minimize the time it takes to file taxes. As a matter of reality, nonetheless, quite a number of of us get extremely lengthy or unsolvable captchas every time.
The other regex matches YouTube URL including these utilizing the youtu.be domains. Email Address – the regex beneath ought to match most typical e mail address formats, together with Gmail aliases that accept the ”+” sign however there’s no perfect resolution. A common expression might seem gibberish however they aren’t so difficult to read and perceive when you can know the basic rules of the language. What you see here’s a compilation of some useful common expressions that can be utilized to validate common kind fields like URLs, cellphone numbers, zip codes, dates, etc. After understand how captcha code works, let’s dig into the implementation. For instance, suppose the person received the verify mark from ReCaptcha but forgot to fill in a textbox.
PHPcaptcha – This Captcha solution is for more superior users who are comfy with server-side programming. It means the varieties are positioned outside of your web site. Your visitors must go away your web site to be able to fill and submit your Google kind.
With this in thoughts, Mori and Malik designed an algorithm that tried to establish words by analyzing the beginning and finish of the string of letters. Next, the algorithm might inform the computer to detect patterns within the black and white image. The program compares every sample to a standard letter, in search of matches. If the program can solely match a couple of of the letters, it might cross reference these letters with a database of English phrases.
Can you counsel any alternate method to use captcha in china area. About your captcha admin dashboard at Google, I really don’t know the answer why it exhibits positive graph typically, and generally not. There is a minimum site visitors threshold and it’s indeed regular to see no less than some statistics, if you move the edge. I wonder why generally v2 recaptcha shows optimistic graph , even after switching to invisible recaptcha.
Postal Address – allow solely alphanumeric characters, spaces and few other characters like comma, interval and hash symbol in the kind enter field. For instance, in case your form is asking for a person’s yr of birth, they need to only be allowed to enter a quantity between 1900 and 2014. Add a new enter field for the CaptchaCode and a picture which invokes the “GetCaptchaImage” Action in above part in your view. First, you have to set your project to allow unsafe code for both Debug and Release configuration. Browse different questions tagged c# asp.web validation captcha or ask your own question.
Now we will show how you can use this captcha code and implement captcha functionality in your CodeIgniter three software. To create captcha image, you have to specify the config choices and cross this array in create_captcha() perform of CAPTCHA helper. Compare consumer enter code with captcha word and return the standing. Here we’ll provide the instance code to implement CAPTCHA functionality in CodeIgniter.
You have created a form and it has all the usual fields where candidates can enter their name, e mail tackle, website URL, cellphone number, zip code and different important details. You can let the consumer click on and cargo a brand new captcha image via jQuery. I remark out Bezier code in functionDrawDisorderLine() because when the image may be very small, it will be very hard to see the characters if there are Bezier strains on it. phpTextCaptcha is an open-supply, free PHP CAPTCHA script to create complex photographs and shield types from spam and abuse. Pick the cats out of the images, add these numbers, solve this fancy equation, and even translate this text are a few of the alternatives available available on the market today.
It can be easily added into current forms on your website to supply protection from spam bots. It can run on most any webserver so long as you’ve PHP installed, and GD assist inside PHP. Securimage does every thing from generating the CAPTCHA images to validating the typed code. Audible codes can be streamed to the browser with Flash for the vision impaired. Next, would you prefer to learn the way to customise automatic notification emails on your varieties? Be certain to take a look at our notifications tutorial for particulars on how to e mail the person who submitted the form, add a header image, and more.
It doesn’t use the image-based CAPTCHA as a substitute it makes use of the audio based mostly CAPTCHA. This Chrome extension would solely work if it has an audio CAPTCHA. Google revamped reCAPTCHA to maintain abusive site visitors away from the websites. But most of the time, Google misunderstood people as a possible bot. This usually happens if you’re not logged into your Google account, or in case you are using a VPN or in case your IP tackle appears spammy to Google.
In this model, it totally changed compared to the earlier model. For instance, when you use reCaptcha in your server as a major layer to confirm users coming from dirty IPs recognized for spamming actions. We solved it by eradicating the offending js code, changing captcha code it with our simple internal statistics monitoring of failed and handed captchas, as a substitute. As you’ll be able to see we now have achieved the organising the form now we’ll use this recaptcha in our PHP code for checking the requests.
The pro version is appropriate with Contact Form 7, BuddyPress and WooCommerce. Last, erase all of the momentary files, as they’re of no use anymore. On showing the image, you can receive the reply from the respondent. If you are interested in additional variables, you possibly can view the really- simple- captcha.php. I used PHP session to retailer the captch and validate it with the person data. The input component namedcaptcha_code is the goal to show the captcha.
I signed up years in the past, and never have to login really, and have never see a captcha on HN. Not saying it doesn’t exist, but I’ve had myriad captcha issues on different sites, however never once here. I use a VPN most of the time and have not as soon as had a captcha for logging into Hacker News.