HP T250 - Manual (Page 67)

6.4.2 Protect
1. Power on the camcorder and make sure it is in the DSC
Playback Mode.
2. Touch the screen to select the file to be protected and touch the
icon or press the Menu Button ( ) to enter Menu
mode. If the photo is already protected, the lock icon will
be displayed in the upper part of the screen as illustrated below.
Protect Lock
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3. Touch the Protect option to enter the Protect submenu. Next,
touch the screen to select the desired option.
Note: Repeat above steps to unlock the file. When the file is unlocked,
the locked icon
will disappear.
4. Touch the icon to return to Playback mode.