Android phone: USB "device"There should be no problem hooking this up via an andriod phone and a USB bluetooth wireless link, why on earth won't GRE provide this info?
PSR-800: USB "device"
USB: "Devices" only connect to "hosts". "Devices" do not connect to "devices".
What "USB bluetooth wireless link" would you put between the phone and scanner?\
The PSR-800 does not have a serial port. (I stress this only because you mentioned such a connection with a 396XT above - and I presume you're using that scanner's serial port).
What "info" would you like from GRE? (Keeping in mind that they're probably not going to give you a schematic or source code.)