The main feature of the POS keyboards is the ability to program functions of the keys. The device is indispensable for automation of the control system and implementation of trade or production processes. The number of keys of the device and their location may vary. Some of the POS keyboards can have a numeric or alphanumeric layout. The device can be optionally equipped with a magnetic card reader, a keylock, a touchscreen or a usual display. One keystroke of the equipment can produce a series of functions which optimizes and simplifies the operator's job. The reduced size of the device allows placing it even at a small cash desk. Reliability is another criterion of the equipment. The keys of the device have a potential of more than 30 million keystrokes for each position. PrechKeyTec is the company which produces only high quality equipment with keypads protected against dust and splashing water. PREH programmable keyboard does not require additional drivers and is compatible with the operating system such as Windows, Linux, DOS. Configurations of the keys can be changed an unlimited number of times.