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A small device, developed by VKB, can project a nearly full-sized keyboard onto any flat surface and uses an infrared system to sense what the user is typing, Siemens said in a statement.
"This is very useful for people who travel a lot and use a PDA or a mobile phone on the road, for typing in a long text while on a plane or train, for example," said Monika Winkler, spokeswoman for Siemens Procurement and Logistics Services.
Siemens first demonstrated the virtual keyboard at the CeBIT tradeshow in Germany earlier this year. It will be the first distributor of the virtual keyboard in the world and is looking at building the technology into its mobile phones and handheld computers, Winkler said.
The virtual keyboard projector will be handled by a VKB partner in Asia, under close supervision from Siemens, which is considering branding the device, Winkler said.
The street price of a virtual keyboard should be between €90 (£57) and €150 (£95), she said.
First deliveries to retailers in Germany and the rest of Europe are planned for late this year.