The Smartphone And Tablet Virtual Keyboard.
This is the Bluetooth device that projects a laser-generated keyboard onto any flat, opaque surface, providing an instant keyboard for any smartphone or tablet. The Class I laser device generates a 9 3/4″-wide x 4″-deep keyboard with 3/4″ keys and recognizes keystrokes in three dimensions by an optical sensor that detects finger placement at different areas on the keyboard, distinguishing between a finger hovering above the space bar or a number key. An invisible infrared horizontal plane projected millimeters above the surface detects actual contact with “keys”—when the plane is interrupted by a finger, the projector assigns a keyboard character, passing it along to a paired device. Keeps pace with typing speeds up to 400 characters-per-minute. Its rechargeable battery provides up to 2 1/2 hours of operation from a 1 1/2-hour charge from AC using the included USB adapter (or three hours via direct connection to a computer). Works with iOS 4+, Android 4.0+, Blackberry 10, Windows 8/7/Vista/XP, and Mac OS X 10+. 3″ H x 1 1/2″ W x 1 1/4″ D. (2 1/2 oz.)