Imagine a ball pen that would remember what it writes, whether sketches or hundreds of pages of text. When I thought of it in May of 2008 I did not know that such a device had already been invented, but realised that most of the elements that would comprise the invention were already there in existing technology. I subsequently learned that a very similar device to what I had in mind had been invented and was being commercialized. This was the EPOS-enabled Digital Pen and USB Flash Drive from Advanced Digital Positioning Technologies (http://www.epos-ps.com).
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