Try stealing a $20 bill the way that this BitCoin was stolen

Apparently, it is pretty risky to show you Bitcoin QR code on TV.  A viewer scanned the Bitcoin QR code from his TV screen and stole the $20.  That is surely one problem that you don't have with a regular $20 bill.On the other had, you can use a Bitcoin electronically in a way you can't use a $20 bill.  The example discussed on Bloomberg can be seen here.