Get deals and information on your phone anywhere there are beacons, be it in shops, bus/train stations, airports, museums, conference centers, exhibits etc.
By just being in the proximity of a beacon, Beacon Reader will react and look up information, if theres any.
Remember to have Bluetooth activated before you run Beacon Reader.
(Beacons in this case meaning iBeacon-compatible beacons based on Bluetooth Smart, that are increasingly used for providing information to mobile phones)