Required tools and equipment: ACR1311U Bluetooth reader, mifare card, BTDEMO.apk mobile software
First: Pull the ACR1311U reader to the Bluetooth position, click the BTDEMO software installed on the phone, turn on Bluetooth, this will search for the reader’s Bluetooth device as shown in the figure ACR1311U-N2
Second: Click the device name to enter the connect page, you can connect to the ACR1311U reader via Bluetooth

Third: Click the authorization verification button in turn to match the connection Bluetooth key. Put the mifare card on the reader, and you can see the card status, power level, etc. in turn

Fourth: Click get atr to get the card reset information, then you can communicate with the card and send APDU commands

Fifth, enter FF CA 00 00 00 in the input box apdu command and click send, the returned information is the card’s uid number. Isn’t it simple?
