Sending a multiple digit reply (up to 16 digits) that is
displayed on the personal screen.
Internal menu from which the participant selects the desired orders.
Typing of personal password for user identification (ID, credit card, entry password).
Personally adjusted screen
saver that can be changed at any time.
Beeper signal to prevent theft and to locate a lost device.
Changing RF channels according to the environment.
External
battery loading.
Energy saving mechanism.
User battery status alert on the personal screen and on the central computer.