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A comment on Show HN: TCP over sound on Android. Parent comment

Re:Show HN: TCP over sound on Android by pacaro on Friday October 21, 2016 @09:34PM (#12766491)
IR was also used for syncing with phones, and printing. Some PDAs (I'm looking at you psion) could print over IR
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Re:Show HN: TCP over sound on Android by mSparks on Saturday October 22, 2016 @05:04AM (#12767930)
Back in the day. i used an Orange contract nokia 8310 ir modem and the free phone 0800 number that came with BT internet to give my laptop intenet.

Lasted around 6 months of near 24/7 use before Orange started detecting data and charging contract customers to call 0800 numbers.

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Re:Show HN: TCP over sound on Android by tonyedgecombe on Saturday October 22, 2016 @10:09AM (#12768730)
I seem to remember the protocol was IrDA, it never worked very well for me.
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