Ok, so now i have actually a working Bluetooth (BT) RFID reader. The pictured device is ugly as nothing else, but it works. Second iteration will be made with clear acrylic or PET plastic. What remains in code is to merge the Mobile Processing (MP) code for the BT reader into my main code, so it will upload read RFID tags to the Bagheera service.
PS. While working with the BT setup i discovered something peculiar. Take a look at the video!