BlueCrew is a system for nightclubs and events that allows people to share video and text with you and others.
At a concert a BlueCrew system is set up. This consists of a computer and attached projector. The software on the PC projects a set of images relating to the band on to the screen including several images calling on people to upload their images via bluetooth to "your name here". People use their mobile phones to upload pictures they have taken of the concert and after these are reviewed they are displayed on the screen. This crowd sourcing of images has been very popular at events with string audience participation.