Tun-a has developed a MP-3 player that sends out a beacon that alerts other enabled Tun-a devices that it is in the area. If another Tun-a is in the area the user can read the other device’s play list and song bank, and even listen in on what the other device is playing. This is all possible via a sort of short range Wi-Fi transmitter. Users are able to swap music between devices as long as they are in range of each other. This is connecting people by virtue of their love of music, and their desire to be contacted (why else would you pay the premium for the Tun-a feature otherwise).
Could people start carrying similar transponders that send out personal information if they are interested in dating, or eager for a job? This is similar to making your internet dating profile available for all to see, as long as they have a similar device. This could have an interesting impact on medicine as well since charts, and vitals could be transmitted through similar short range transmitters. Doctors could just walk up to a patient and instantly get their statistical information. Instead of beaming music we could beam out useful medical and health information.