techeblog.com — JustDIY proves that LEDs can be used for more than lighting, but also as an input device. "This is a collection of the work this user has done using the bi-directional properties of LEDs. he have also included links to information found on the subject and the project by an NYU research that inspired him."
May 20, 2006 View in Crawl 4
copeland3300May 21, 2006
This was on hack-a-day a long time ago.....
mikewittMay 21, 2006
I'm glad someone finally said it. Took a while too...
Closed AccountMay 21, 2006
The light can be advertised as cool. Note: Razor Copperhead
sinembarg0May 22, 2006
No, trackpads can only have 1 input on at a time, I.E. one finger. This clearly can have more.
hmniqMay 22, 2006
Could someone explain how the two-fingered scrolling on Macbook works then?
vtwinMay 22, 2006
How about using infra-red LEDs? Edit: (inkyblue2 beat me to it)