A wireless communications device (500, 600) comprising: a set of antennas (505, 605); a narrowband transceiver coupled to a first member of the set of antennas (505, 605); and a broadband receiver, coupled to a second member of the set of antennas (505, 605), the broadband receiver configured to receive a digital signal from a second wireless communication device, wherein the digital signal comprises connection information from the second wireless communications device; and processing circuitry, coupled to the narrowband transceiver and the broadband receiver, the processing circuitry configured to: process, in response to receiving the digital signal, the connection information received by the broadband receiver, the connection information comprising an identifier for the second wireless communications device; identify, based on the identifier, a user of the second wireless communications device, the user being a social-networking user of a social-networking system, the social-networking user being associated with the second wireless communications device; detect, based on the identifier, that the user is within proximity of the wireless communications device (500, 600); establish a communications channel for the narrowband transceiver based on the connection information; and retrieve social-networking information using the narrowband transceiver over the narrowband communications channel. a set of antennas (505, 605); a narrowband transceiver coupled to a first member of the set of antennas (505, 605); and a broadband receiver, coupled to a second member of the set of antennas (505, 605), the broadband receiver configured to receive a digital signal from a second wireless communication device, wherein the digital signal comprises connection information from the second wireless communications device; and processing circuitry, coupled to the narrowband transceiver and the broadband receiver, the processing circuitry configured to: process, in response to receiving the digital signal, the connection information received by the broadband receiver, the connection information comprising an identifier for the second wireless communications device; identify, based on the identifier, a user of the second wireless communications device, the user being a social-networking user of a social-networking system, the social-networking user being associated with the second wireless communications device; detect, based on the identifier, that the user is within proximity of the wireless communications device (500, 600); establish a communications channel for the narrowband transceiver based on the connection information; and retrieve social-networking information using the narrowband transceiver over the narrowband communications channel. process, in response to receiving the digital signal, the connection information received by the broadband receiver, the connection information comprising an identifier for the second wireless communications device; identify, based on the identifier, a user of the second wireless communications device, the user being a social-networking user of a social-networking system, the social-networking user being associated with the second wireless communications device; detect, based on the identifier, that the user is within proximity of the wireless communications device (500, 600); establish a communications channel for the narrowband transceiver based on the connection information; and retrieve social-networking information using the narrowband transceiver over the narrowband communications channel.