Socket CF RFID User Manual page 12

If you do not want to assign a hardware button, you can install
and use SocketScan Trigger software from the installation CD,
which enables you to tap on a software icon to trigger
SocketScan and the RFID reader/bar code scanner.
Refer to your device manual for specific instructions.
1. Tap Start | Settings | Personal | Buttons.
2. In the Button list, select a button. In the drop-down menu,
select the program. If desired, repeat to assign additional
trigger buttons. When done, tap ok.
Note: For best ergonomics, choose a button located beneath
your thumb or forefinger when you hold the device. For the
Socket SoMo 650, the left and right buttons are ideal.
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