SMK Corp developed “Wireless Input Pen,” which can transmit characters written in the air and displays them on a monitor.
According to SMK, it is the world’s first pen-type device that can transmit characters written in the air to a monitor …
I caught this via a story on Engadget.
Engadget mention the pen can operate by ‘flittering the device about in mid-air’ — I see no reason why it must be. I can envisage the pen being used as a kind of universal ‘wireless stylus’. It thereby becomes as good as a tablet input pad without the restriction of a fixed size pad or position.