I used an off the shelf IR touch frame bought from Aliexpress: http://www.aliexp... | Hacker News

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arey_abhishek on Sept 11, 2015 | parent | context | favorite | on: Dry erase board lined with IR sensors to record pe...

I used an off the shelf IR touch frame bought from Aliexpress: http://www.aliexpress.com/wholesale?catId=0&initiative_id=AS... All touch inputs fed into Raspbery PI with a wifi dongle.

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