Invisible digital post-it notes
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February 12, 2005 In the future, cell phone users will be able to leave messages anywhere in the form of what might be termed electronic post-its. They will be able to post virtual messages referring to a specific location wherever they are needed. Siemens researchers have now created the technical basis and the computer programs for this "digital graffiti service." Post-its are exceedingly practical. They're a handy way of letting people know if you've gone out quickly to shop or to lunch, or for reminding you to do things. However, you can't stick these yellow memos in mid-air - at least not yet. But that will be possible in future with the virtual post-its from Siemens Corporate Technology's research laboratory in Munich. Dieter Kolb's team of specialists have developed computer programs that assign cell phone messages to specific locations.
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