I got a question a about is there a Cisco VPN client that can be used with Honeywell PDA and Cisco ASA?
Cisco ASA 5520
Model: Dolphin 7800
O.S. Windows Embedded Handheld 6.5 Professional
It's not officially supported (meaning not tested).
here is the supported list for your reference:
BTW, does it have L2TP over IPsec client on that PDA? if it does, maybe you can test it.
I seriously doubt you will see a VPN client developed for this very small market share device. I'd pursue the SSL VPN route for something like this and deliver the required services via the device's browser interface.