Banks that give out these notes track the serial numbers. If they receive a stolen note they will have to report it to the police. If you happen to be the owner of a stolen note, the note will be confiscated if you try to bank it. You will of course have to explain to the police how you got the note
I'm sure the fast runner who snatches notes quickly will know where to use the notes such that they will not be confiscated. It is extremely unlikely he will try to bank it.
Bytheway, you should also address the issues of tearing, turning colour and flying away. :p
