Bluetooth transmitters were fitted to poster sites, allowing us to send text messages to passers by, challenging them to a mission from the NZ Army. The mission was to find an Army operative located in their immediate area and text back his co-ordinates within 30 seconds. The operative was hidden in camouflage on the poster nearby. If they found him in time and texted back his coordinates, they were sent a congratulations message and directed to the NZ Army website. If they failed, they were directed to the Army’s ‘force9’ website for further training.