Question: Which mobile communications protocol allows two portable devices to communicate wirelessly at a range of about 2 inches, supports encryption, and is becoming a very

Which mobile communications protocol allows two portable devices to communicate wirelessly at a range of about 2 inches, supports encryption, and is becoming a very popular mode of sending payments using a smartphone?
802.11b
NFC
Bluetooth
local area network
Which mobile communications protocol allows two portable devices to communicate wirelessly

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