During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a coupon or a catalogue.
We've had a glimpse at Apple's conception of a sensor-based keyless layout, and the latest patent application from Cupertino shows the company looking to further refine the input experience -- this time using a camera and other sensors to detect hand position and overlay that hand position on a device's screen.