Stay flexible. Traditional and modern method of access control in a single reader. The 2N® Access Unit 2.0 Bluetooth & RFID reads both frequencies of RFID cards – 125 kHz and the smart 13.56 MHz. The users can also authenticate with their mobile phone. All they need to do is switch on Bluetooth and install the 2N® Mobile Key application. They can leave their phone in their pocket and simply tap the reader.