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A comment on Dry erase board lined with IR sensors to record pen strokes [video]. Parent comment

Re:Dry erase board lined with IR sensors to record pen strok... by arey_abhishek on Friday September 11, 2015 @06:01PM (#10206413)
A 85inch DIY whiteboard will cost about 500$ to make while the MSFT surface hub costs 19,999$.
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