Active field line guidance increases the sensitivity of Schurter's capacitive sensors so that a finger is detected as soon as it approaches. To achieve this, the field lines of the projected capacitive sensor surface are concentrated upwards instead of being scattered around the keypad.
This enables contactless activation of the capacitive buttons. To activate a touch surface, all you need to do is bring your finger close to the capacitive field of the CapKeys. By developing its own sensor design and fine-tuning the controller, the company has succeeded in making a projected capacitive touchscreen 'touchless'.
The touchscreen reacts to a small distance between the finger and the actual surface. The hardware and software settings of the PCAP controller, particularly with regard to sensitivity, are decisive here.
The touchless operation of the CapKey and PCAP controllers enables a higher standard of hygiene. The 'touchless actuation option' in the application can be activated or deactivated by the customer.