Thanks Jewelzz for sending this in.
A full-size fully functional virtual keyboard that can be projected and touched on any surface is shown by Siemens Procurement Logistics Services at the CeBIT fair in Hanover, northern Germany, on Monday, March 18, 2002. The virtual interface from Developer VKB Inc. from Jerusalem in Israel can be integrated in mobile phones, laptops, tablet PCs, or clean, sterile and medical environments and could be a revolution for the data entry of any mini computer. The mini projector that detects user interaction with the surface also simulates a mousepad. The biggest computer fair of the world is open for public until Wednesday, March 20, 2002.