Here’s how the system might work: at the store, someone buying a new DVD would have to provide a password or some kind of biometric data, like a fingerprint or iris scan, which would be added to the DVD’s RFID tag.

Then, when the DVD was popped into a specially equipped DVD player, the viewer would be required to re-enter his or her password or fingerprint. The system would require consumers to buy new DVD players with RFID readers.

[via]