Actually it isnt very hard to fake an RFID chip, encryption can be broken. And it is actually easy to program one. The problem arises when you go to cash it in and they see the original chip shows still in the cage or in play on the floor at a table. Now they have two chips with the same ID and you are busted. Plus the casino will still be using the older methods of telling if the chips are fake or not. But of course there is an easy way around this. Remember, it isn't foolproof. I am sure some of you reading this have already seen the way it can be beat.