•Turn the scanner off.
•Press and hold FUNCTION while you turn the scanner back on.
•The scanner display shows Key Safe Mode On (or Key Safe Mode Off ), then returns to the operation it was performing when you turned it off.
•While Key Safe mode is on, MENU is disabled along with the key combinations described in the table below.
•When you try to use a disabled key combination, the scanner display shows Key Safe Mode. Press FUNC while Power On for Full Operation .
The table below shows which key combinations are disabled and which ones operate normally (depending on the operating mode the scanner is in):
See manual page
http://info.uniden.com/twiki/bin/view/UnidenMan4/BCD996XTKeySafeMode