A woman whose photo was taken on a stolen mobile phone is being sought by Sussex Police.
The owner reported that the iPhone had been stolen at the Coalition nightclub in Brighton earlier in December.
An app had been installed on the phone which takes a photograph of anyone who tries to unlock it, maps their location and sends the information to the owner.
PC Gavin Crute said: "We know where and when the photo was taken" but added that the woman might not be the thief.
Police said the photo was taken in a vehicle with a large sunroof.