1. A transmitter apparatus comprising: a first power transmitter and a second power transmitter for wirelessly coupling with a first and a second power receiver in a first and a second mobile device, respectively, the first and second power transmitters comprising planar windings configured to exchange power signals with the first and second power receivers wirelessly by magnetic induction, wherein the transmitter apparatus is configured to transmit a data communication authorization to the first and second mobile devices responsive to the first and second receivers wirelessly coupling to the transmitter apparatus, the data communication authorization authorizing data communications between the first and second mobile devices.