The touch interface is the communication interface through which a touch panel or its controller transmits data to the host system. Common options include:
- I²C – a low-bandwidth serial bus for compact, low-power embedded systems,
- USB – a universal plug-and-play standard with wide OS compatibility, often used in monitors and HMI panels,
- RS232 – a legacy but reliable serial protocol still used in industrial environments for its robustness against interference.
The choice of interface depends on application requirements, available ports, data transfer speed, cable length and compatibility with existing hardware.
