My bank doesn’t do checks, but they check the signature on incoming (paper) mail with a signature of mine they have stored somewhere – I had to come in once spe

My bank doesn’t do checks, but they check the signature on incoming (paper) mail with a signature of mine they have stored somewhere – I had to come in once specifically because my signature was different. Similarly, when signing leases for flats, you usually need a copy of your passport/ID to prove that the signature is indeed yours. Edit: Oh, and just pretending to be someone else is a lesser crime than pretending to be someone else and faking their signature, so requiring a signature might help as some sort of deterrent. (You can still do three circles for your signature, but doing three circles while impersonating someone else and giving the impression that said three circles are their signature is a crime on its own (in Germany (IANAL))).