Leap Motion gesture control system
PRICE: $79.99 at Leapmotion.com
Sleek, elegant device detects hand and finger movements, and uses them to control computer software.
PROS: Easy to set up; improves performance of Microsoft Inc.’s Windows 8 software on computers lacking touchscreens.
CONS: Works only with customized software; useless for standard personal computer programs. Difficult to use; delivers inconsistent performance.