How-to put a security label on your GPS
This can still be done on the eTrex 10/20/30 models
1 Start by connecting your Garmin to your computer via its USB cable.
2 Then display the disk drive list for your computer.
3 Click to display the Garmin drive.
4 Click to enter the Garmin folder.
5 Open the file startup text with Notepad or any other text editor. Type in your own details - along the lines of the example below, including the number of seconds you want your message to be displayed.
6 Save the file with its original name.