I am looking for a wireless solution that comes with a limited range (for pairing) of 10 inchesFrom what I understand:NFC: 4 inchesBluetooth: 30 feetCan I lower the BT's power consumption to meet my exact needs of 10 inches? Does another solution exist?Sovrac
BT has low power modes, even for active paired connections. I suppose it depends on the hardware you intend to use and whether it supports those modes?
The BT protocol negotiates based on signal level what the power is, you don't have to do anything.
how will I know who, or what I am pairing to until it's already been paired?
Quotehow will I know who, or what I am pairing to until it's already been paired?Normally the device asks the user for permission.
Can the BT's range be limited to my exact needs?
QuoteCan the BT's range be limited to my exact needs?No I would not think so. Radio is not that precise.