I have noticed this with newer touch screen terminals in the POS industry. The newer touch support and 10 point touch displays seem to be the cause. Windows reports this in Control Panel\System and Security\System "Pen and Touch".

If I disable the HID-Compliant Touch Screen in device manager, the terminal can no longer be used by the guest. This makes sense obviously since touch is gone. After this change the system no longer reports that touch is available. We had to accommodate this in our software at my company. 

I was just thinking about this the other day. If only I could connect to my clients SQL server to run queries using the session as the bridge.