2 of 4
BACKNEXT
Laser tag
A tiny laser, made by optical gear companies like JDSU, projects infrared light that's invisible to the human eye. The light hits your body and bounces back through a filter, which discards any ambient light. An image sensor uses data from your reflection to ascertain the way you've moved your hand.


NEXT: Hot chips
Last updated March 22 2011: 11:17 AM ET
More from Fortune Tech
iPad: The new stethoscope?
Like its predecessor, the iPad 2 wasn't built specifically for enterprise customers. But that doesn't mean you won't find tablets in the office. Or in the operating room. More
Goodnight Zune
After five years of false starts, word is leaking out that Microsoft is giving up on its much-maligned portable music player. More
Would you sell your Kindle to sell a used book?
A recent Supreme Court decision, confusing Copyright Office rules and Amazon's Kindle policies all indicate that the only way consumers will ever get to resell "used" ebooks may be to sell their hard drives, too. More
Contact Us Closed Captioning Manage Cookies+ Site Map

Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.