While strands of DNA may be able to pick fights with other strands, one thing that they can't do yet is play computer games -- that is, until now.

ENGADGET: Meet MAYA-II, the new DNA computer that can play Tic-Tac-Toe

You probably already know that Sony BMG has started selling at least some CDs that include built-in copy-protection, making it difficult to play the CDs on a computer using any media player other than the one bundled on the CD, and limiting the number of copies you can make.

ENGADGET: Sony DRM hacks your PC

As children play, a monitor on one finger tracks their heart rate and displays it on the computer screen.

ENGADGET: Researchers create video game that monitors heart rate to keep children's anger in check

To play games at one of the Internet cafes, a customer gets a prepaid card and then goes to a computer.

NPR: Fla. Politician Resigns, 57 Charged In Scandal