A method comprising: determining , by a first device , a request for interaction from a second device , wherein the first device is associated with a first antenna and a second antenna , wherein the first device is also associated with a proximity communication range in which the first device may share sensitive information with other devices within the proximity communication range, and wherein the request for interaction is a request for access to read, write, modify, transfer, inquire, or a combination thereof; determining , by the first device, a first signal received by the first antenna from the second device and a second signal received by the second antenna from the second device; determining , by the first device, one or more first differences in one or more characteristics of the first signal and the second signal, wherein the one or more first differences are indicative of a distance between the first device and the second device; determining , by the first device, whether to allow the interaction based, at least in part, on the one or more first differences and the proximity communication range; if the interaction is allowed, determining , by the first device, a third signal received by the first antenna from the second device and a fourth signal received by the second antenna from the second device during the interaction; determining , by the first device, one or more second differences in one or more characteristics of the third signal and the fourth signal; and determining , by the first device, whether to discontinue the interaction based, at least in part, on the one or more second differences and the proximity communication range. determining , by a first device , a request for interaction from a second device , wherein the first device is associated with a first antenna and a second antenna , wherein the first device is also associated with a proximity communication range in which the first device may share sensitive information with other devices within the proximity communication range, and wherein the request for interaction is a request for access to read, write, modify, transfer, inquire, or a combination thereof; determining , by the first device, a first signal received by the first antenna from the second device and a second signal received by the second antenna from the second device; determining , by the first device, one or more first differences in one or more characteristics of the first signal and the second signal, wherein the one or more first differences are indicative of a distance between the first device and the second device; determining , by the first device, whether to allow the interaction based, at least in part, on the one or more first differences and the proximity communication range; if the interaction is allowed, determining , by the first device, a third signal received by the first antenna from the second device and a fourth signal received by the second antenna from the second device during the interaction; determining , by the first device, one or more second differences in one or more characteristics of the third signal and the fourth signal; and determining , by the first device, whether to discontinue the interaction based, at least in part, on the one or more second differences and the proximity communication range. <EOS>