Grumpy_Mike:
how will I know who, or what I am pairing to until it's already been paired?
Normally the device asks the user for permission.
As long as the device/s are set Secure Simple Pairing (SSP) to Just works, user permission will not be required. I want to achieve seamless pairing similar to NFC+WIFI on the Galaxy S3, but since NFC is limited to a few centimeters, I am hoping BT will help me solve this problem. Can the BT's range be limited to my exact needs?
_*BT Paring Source Bluetooth - Wikipedia