Comment on Ask HN: User friendly Captcha systems for mobile apps?Comments−angryasian10yOn mobile is it necessary. I guess its most dependent on what you're trying to accomplish. On mobile you have access to a unique id like device id or other identifiers that are specific to a device.−yonilevyOP10yBut how do you know it's not just a random string?−angryasian10yI think it depends on what you are trying to accomplish with the use of the captcha.
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On mobile is it necessary. I guess its most dependent on what you're trying to accomplish. On mobile you have access to a unique id like device id or other identifiers that are specific to a device.
But how do you know it's not just a random string?
I think it depends on what you are trying to accomplish with the use of the captcha.