Dry erase board lined with IR sensors to record pen strokes [video]

Re:Dry erase board lined with IR sensors to record pen strok... by jwcacces on Friday September 11, 2015 @03:46PM (#10205777)

My high school had these in 1995. Each marker color had a different reflective pattern on a band around the tip so the scanning laser could read it like a bar code. I remember the eraser having a solid reflective band all the way around. It was pretty cool, as we all got whiteboard "transcripts" emailed to us at the end of the class that you could play back / pause / rewind / etc... whenever you wanted.

Also, these boards had no projectors (they used real ink in the markers) and didn't require special markers (just the barcoded pen collars, which were removable)

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Re:Dry erase board lined with IR sensors to record pen strok... by raldi on Friday September 11, 2015 @03:55PM (#10205821)

And the erasers were circular, so that their rotation wasn't significant and didn't need to be known by the software.

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Re:Dry erase board lined with IR sensors to record pen strok... by jwcacces on Friday September 11, 2015 @04:13PM (#10205908)

Yes!

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Re:Dry erase board lined with IR sensors to record pen strok... by jballanc on Friday September 11, 2015 @04:37PM (#10206043)

Also had one of these in high school, but connected to an uplink for a distance learning setup. There were about 20 of us in the actual classroom, and then 3 or 4 other classrooms would get the same whiteboard feed live.

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