Photos: Tinkering around at TechFest 2009

A Microsoft researcher demonstrates "writing in the air"--a project that uses a brightly colored object such as a ball or piece of fruit to draw a Chinese character that can be picked up by a Webcam. The approach represents an alternate means for entering text without a keyboard--particularly useful in Asian languages.

Photo by Ina Fried/CNET Networks

Caption by Ina Fried