NEC MULTEOS Series Brochure & Specs page 13

Security / Reliability
Special security against theft
People with sticky fingers won't have a chance!
The public displays can be secured against theft with the help of a PiN code
accessed via the On Screen display. using the OSd function diSPLAY
PROTeCTiON – CHANGe SeCuRiTY PASSWORd an individually chosen
password can be entered.
As soon as the security function is switched on, after a break in the power
supply the display can only be reactivated again using the pre-defined
password.
deactivation of sensor/keyboard
The control buttons on the display can be deactivated using a given key com-
bination so that unauthorised users can't change the settings.
NeC's public display models MultiSync
MultiSync LCd5220 also have an interface cover, so that no unauthorized
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person can switch off the display or remove the cable.
The infrared sensor of the display can also be individually barred from
being used by other remote control units, so that there's no possibility of an
unauthorized person controlling a display even if they are using an original
NeC remote control.
LCd4020, MultiSync LCd4620 and
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