Some hackers like to "shoulder surf," or steal unsuspecting PC users' passwords by looking over their shoulders at the Internet café. Others prefer to crack an account's password -- using sophisticated software programs. But new developments in network security are going to wipe out the shoulder surfers, and their cracker pals, experts tell United Press International's Networking. Graphical passwords are emerging -- images, not words or phrases, which authenticate access to a computer or a network. By Gene Koprowski