DaniAngione wrote:I mean, it's not like no one has ever done it. Several games are using captcha (or other variations) to detect AFK players, private Ultima Online servers were using random "type this number!" pop-ups 10 years ago to prevent macroers, etc...
This looks a lot more elegant than captchas. Could literally make it 2-4 numbers or letters randomized. I guess a bot could crack it by putting in something to randomly generate a solution when posed, but it would require time to get it right - even then you could counter this by having it changed when the input is done incorrectly 4 times in a row.
Simple for players, hard for bots.