The eye tracker also detects the eye distance of the wearer by measuring the eyes' vergence, which allows to optimize the 3D experience for individual physiognomies.

ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective

Using an eye tracker, she found that college-age people rotate the bottles, enabling them to see all the informational stickers that pharmacists attach, whereas older people focus on just the bottle's large white label.

WSJ: Ring, Buzz, Flash: It Must Be Time to Take Your Medicine

Developed in partnership with NTT DOCOMO's manufacturing partner, Fujitsu, the ibeam prototype uses the most advanced and compact eye tracker in the world, the Tobii IS20 (formerly Tobii IS-2), allowing an unsurpassed eye-tracking experience when using the device.

ENGADGET: Tobii, Fujitsu and NTT DoCoMo partner on eye tracking ibeam tablet, promise a peek in October