What you want is to be able to answer a few sensible questions uniquely identifying you, the trouble is there's probably a repertoire of only ten of those questions, you're going to get asked three or four of them, but those questions, your date of birth, your telephone number, the er address of your bank and so on and so forth, if you're a private detective you can get those, you can have them on a sheet of paper and you can pretend to be whoever you like.