Chips on DVD's that could prevent theft?

[rohit147]

New technology designed to thwart DVD theft makes discs unplayable until they're activated at the cash register.
A chip smaller than the head of a pin is placed onto a DVD along with a thin coating that blocks a DVD player from reading critical information onon the disc. At the register, the chip is activated and sends an electrical pulse through the coating, turning it clear and making the disc playable.
The radio frequency identification chip is made by NXP Semiconductors,based in the Netherlands, and the Radio Frequency Activation technology comes from Kestrel Wireless Inc., based in Emeryville.