Where is the ArcPad registration code located on a Windows PC?

Answer

The location of the ArcPad registration code is found at different locations in the system directory depending on the version of ArcPad installed.

Warning:   
The instructions below include making changes to essential parts of your operating system. It is recommended that you backup your 
operating system and files, including the registry, before proceeding. Consult a qualified computer systems professional, if necessary.

Esri cannot guarantee results from incorrect modifications while following these instructions. Therefore, use caution and proceed 
at your own risk.

To access the Windows Registry Editor:

1. Right-click the Windows Start button, and click Run. 
2. In the Run dialog, type regedit, and press Enter.

In ArcPad 8.x:
Registry Editor > HKEY_LOCAL_MACHINE > Software > Wow6432Node > ESRI > ArcPad > SerialNumber

In ArcPad 7.x:
C:\Windows\ArcPad.INI

• How To: Modify or remove ArcPad registration code from a Windows Mobile device