We had both (both the original TAN list where every number could be used just once and invalidated all previous numbers on the list and the iTan system). I pre

We had both (both the original TAN list where every number could be used just once and invalidated all previous numbers on the list and the iTan system). I prefer the token thingy my bank gave me. Insert your direct debit card, enter two numbers from the screen (usually corresponding to your transaction in some way, to confirm _again_ that you're really trying to send money to account X) and generate the TAN. Done.