There are 2 usb magnetic card readers. In Device Manager, they are defined as input devices. Actually, they work as keyboards, bring a card, it sends a set of numbers to the system as if they were entered from the keyboard. It is necessary on the computer with software to which 2 readers are connected, to recognize which reader is receiving the signal, programmatically on Sharpe.

Closed due to the fact that off-topic participants Suvitruf ♦ , torokhkun , Yuri Glushenkov , cyadvert , Pavel S. Zaitsau 25 Nov '15 at 6:56 .

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