System and method using distance bounding to provide security in fine timing measurement (FTM) communications including authenticating a prover device at a verifier device, including: transmitting from a verifier device, through the wireless interface, a sequence of challenge bits for a prover device, each challenge bit being transmitted in a respective FTM frame; receiving, at the verifier device, FTM acknowledgment frames; determining, for at least some of the received FTM acknowledgement frames, respective round trip time (RTT) measurements; determining, for at least some of the received FTM acknowledgement frames, whether the included response bit matches a predicted response bit; and authenticating the prover device based on the determined RTT measurements and the determined response bit matches.