Require a verification code within X mins after purchasing a property

[Penthea]

Would the purchase timer be reset after a failed captcha? That could potentially upset players even more if the failed captchas mean they're kept stuck waiting that much longer for the plot.

I suppose what they can do is give players multiple attempts, lets say three, to enter the code and the code would change each time so that a bot would have a harder time trying to figure out what it is.

As an additional way to prevent bots buying SE could also add the one-time password (the authentication code you use to log in) as a final step. It would be very difficult to get a bot to be able to access the one time password because it's on hardware that is separate to the pc (mobile phone or small keychain device). I'm sure there is a way to get a bot to access it through connecting the phone to the pc but I imagine that would be a complicated process that could only be achieved by a person with very specialised knowledge.

Having said that someone would eventually create software so that a person who is a novice in that field can do it, but considering phones are not completely standardised with what OS they use and even what version it would still be troublesome to many people to get it to work.