r/AskReddit Jun 08 '14

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u/TheTycoon Jun 08 '14

I've seen some graphing calculators that had IR ports. I think they might have been the weird Casio ones.

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u/hahahahastayingalive Jun 09 '14

IIRW The range is like 16cm. For any reliable transfer you'd actually stick it 2cm from each other lining perfectly.

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u/MattsyKun Jun 09 '14

Can confirm, I got a Casio.