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"Recaptcha" doesn't show up

  • Hi opera peoples. I am using 50.0.2762.67, in the last few weeks I have tried to register on a number of forums, and the Recaptcha never shows up. I disabled "block ads" extension competely, so that's not it. I enabled flash, I have no idea if recaptcha is flash or not, but I tried it anyways, so.... what else can I try?
    P.S.
    I tried asking for help on twitter from opera, but never even got a response.

  • @gruppaa What are some example websites? There is now in use on many site codings an 'invisible Recaptcha' technique that works by monitoring mouse movements to block bots instead of the user entering something, and sometimes these are not working reliably on properly for certain sites or for certain site/browser combinations. In some cases, the sites don't show the old-style Recaptcha's when they should (eg: if the invisible Recaptcha fails to detect a human, it is supposed to make the old-style Recaptcha appear... but in some cases, that doesn't happen).

  • @blackbird71 said in "Recaptcha" doesn't show up:

    @gruppaa What are some example websites? There is now in use on many site codings an 'invisible Recaptcha' technique that works by monitoring mouse movements to block bots instead of the user entering something, and sometimes these are not working reliably on properly for certain sites or for certain site/browser combinations. In some cases, the sites don't show the old-style Recaptcha's when they should (eg: if the invisible Recaptcha fails to detect a human, it is supposed to make the old-style Recaptcha appear... but in some cases, that doesn't happen).

    One of the sites was https://offtopic.com/login/login others were military related, I can't mention them. But I just checked, and they seem to be working all of a sudden. Very strange. I will let you know if something changes in the next few days, again.

  • @gruppaa In general, these human-verification Captcha/reCaptcha mechanisms employ a link from the website to a Google script server which supplies the verification functionality to the site code the user is trying to access. If a problem occurs with Google's script, its servers, the handshaking between the site code and Google's server, or the site code's interfacing with the verification process itself, the verification mechanism will fail to work properly - or not work at all.

    Ordinarily, everything functions seamlessly, but 'ordinary' does not mean 'always'. There are a number of places where things can get messed up by code/file corruption, temporary handshaking difficulty between sites, update issues, or maintenance issues anywhere along the way. Moreover, if a website is employing browser sniffing and depending on where/how that's implemented, the sniffing can accidentally bypass critical parts of the verification mechanism and lead to a failure.