Learn how to use Proxmark3 X with Android phone with USB and Bluetooth Connection.
RFID Tools(Out of date firmware support)
This Android App is a necessary research tool in the field of RFID. It includes Proxmark3 universal client. The client comes from the latest RRG Iceman repo. You can use it to connect your Proxmark 3 RDV4.0 via Bluetooth or USB-OTG.
The OTG adapter is required if there is no USB A Socket on your Android device.
USB UDP Bridge
This app works as a bridge to transfer the communication between the UDP and USB serial port. So you can turn UDP connection from Proxmark3 USB to the Proxmark3 Client in Termux.
You need to pair the Proxmark3 X in the Android settings. In the app, select TCP server as 'Device A' and choose the port(eg, 8080). Choose Proxmark3 X device as 'Device B' -> 'Connect to classic Bluetooth device'. Ensure 'Retransmission' is set to 'both ways'. It is possible to record the config as autostart, cf 'Settings' -> 'Autostart setting'.