Establishing communication

One or more computer-readable non-transitory storage media embodying software that is operable when executed to:

• process connection information received by a broadband receiver of a wireless communications device in response to a digital signal, the broadband receiver being coupled to a first member of a set of antennas of the wireless communications device and the broadband receiver configured to produce the digital signal, wherein the connection information comprises an identifier for a personal communications device;
• detect, based on the identifier, that a user of a social-networking system is within proximity of the wireless communications device, the social-networking user being associated with the personal communications device;
• establish a communications channel for a narrowband transceiver based on the connection information, the narrowband transceiver being coupled to a second member of the set of antennas;
• and
• communicate using the narrowband transceiver.

A method comprising:

• processing, by one or more processors of a wireless communications device, connection information received by a broadband receiver of the wireless communications device in response to a digital signal, the broadband receiver being coupled to a first member of a set of antennas of the wireless communications device and the broadband receiver configured to produce the digital signal, wherein the connection information comprises an identifier for a personal communications device;
• detecting, by the one or more processors, based on the identifier, that a user of a social-networking system is within proximity of the wireless communications device, the social-networking user being associated with the personal communications device;
• establishing, by the one or more processors, a communications channel for a narrowband transceiver based on the connection information, the narrowband transceiver being coupled to a second member of the set of antennas;
• and
• communicating, by the one or more processors, using the narrowband transceiver.