1. A method comprising: transmitting, from a detecting device, a signal triggering transmission, from at least one wireless communication device, of a signal; detecting, at the detecting device, the at least one wireless communication device one of before, during and after capture of an image, wherein the at least one wireless communication device is associated with an entity on the image, wherein the detecting comprises receiving the signal transmitted from the at least one wireless communication device, and wherein the signal transmitted from the at least one wireless communication device comprises information about a received signal strength of the signal triggering transmission of the signal from the at least one wireless communication device, wherein a radiation characteristic of the detecting device is configured to correspond with an angle of view of the detecting device; and storing an identifier of one of the entity and the at least one detected wireless communication device with the captured image, wherein the detecting device comprises a directional antenna and an image capturing device, and wherein the radiation characteristic of the directional antenna is configured to correspond with the angle of view of the image capturing device.