Actually Scanner Master probably uses something like LogMeIn or TeamViewer to remotely access the users computer and some of these remove access programs are as simple as having the end user go to a specific website and entering an access code provided by the person supporting the end user. It is pretty easy to do, I think even my mother could follow basic instructions.
Someone remotely could download and install Sentinel and make sure the computer can see the scanner. The end user would just need to connect the USB cable and follow the instructions of the support person.
What would be even better if Uniden would have a way for someone to access Sentinel files even from a 3rd party file sharing site. For example, if I thought I had be best scan lists/programming for my location, I could upload my file to share with one or more users. Uniden would need to have an option in the Sentinel servers where a user could possibly have shared scan lists??? Might not be so easy or worth the effort on Unidens part.
I think this is possible with something like FreeScan, Butel or ProScan, but as I recall there is not much 3rd party support for the HP version scanners.