On using Coinhive CAPTCHA instead of reCAPTCHA by Google
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Here's an article by Daniel Aleksandersen: "On using Coinhive CAPTCHA instead of reCAPTCHA by Google". Here are two excepts from the article:
Coinhive, the in-web-browser crypto-currency-mining service, has an interesting new approach to CAPTCHA challenges. Instead of asking people to perform meaningless tasks, Coinhive asks their computers to perform a processor-intensive task for a few seconds instead.
I’ve literally worked as a professional CAPTCHA solver. That is to say, I’ve helped people who’ve emailed in to support to complain that they couldn’t create an account with one of my previous employers online services because they couldn’t solve the CAPTCHA. It was a awful CAPTCHA and it regularly took me 5–10 attempts to solve it on behalf of customers as I tried to help them setup their accounts. I hate traditional CAPTCHAs. They’re awful.
As Aleksandersen points out, traditional CAPTCHAs are user-unfriendly. Coinhive seems to have a solid, user-friendly, and disability accessible CAPTCHA system. Unfortunately, Coinhive is out-of-business. Hopley something will come along to replace it.
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@Eggcorn , very necessary, because Google's current re-Captcha system is more than obsolete, since bots manage to solve it better than humans (see for example the Buster Captcha Solver extension), they are just annoying for the user and they are also a hole of privacy.
There are also other better systems, such as the Honeypot, which unfortunately has not caught on very well. This really differentiates bots from humans by redirecting the bot to respond to a hidden field for a user. -
@Catweazle said in On using Coinhive CAPTCHA instead of reCAPTCHA by Google:
Google's current re-Captcha system is more than obsolete, since bots manage to solve it better than humans
Another reason for something like Coinhive CAPTCHA: Coinhive didn't require the user to solve anything, it only ate up the computer's CPU for a couple of seconds. A slight speed-bump for a legitimate user. But for a bot filling our hundreds of CAPTCHAs: That's a lot of CPU the bot's going to need to work properly!
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@Eggcorn , yes, I have understood it that way, I only mentioned Honeypot as another method that also does not require user intervention and without spending CPU, as it only needs a small script on the page to create the trap.