Mobile modular folding biometric apparatus

A mobile modular biometric apparatus, comprising:

• a first case configured to support a mobile terminal;
• a second case configured to support a first biometric sensor;
• a coupler configured to rotatably couple the first case to the second case;
• and
• a plurality of conductive lines configured to carry signals between the mobile terminal and the first biometric sensor, the signals comprising biometric information from the first biometric sensor, wherein the coupler is configured to control the first case and the second case to rotate between an open position and a closed position, the first case overlapping the second case in the closed position and having a different orientation relative to the second case in the open position.