Radiofrequency badge reader RFID 125 KHz for PC on USB port (plug & play):
It doesn’t need installation drivers, it works as keyboard emulator.
The device is read-only and it is essential to acquire the card code, via a PC, so it can be matched to its user.
When a card is read, the LED changes from red to green and you hear a beep.
The maximum reading distance of the card is 10 cm.