well that sucks but i read this tip in another post and its a great idea for a non digital trail cam....
load your film and have a sigh made .. step infront of the cam and hold up your sign to your chest so it takes a picture of your face and the sign.... the sign should read to this effect................ " If this film is being developed by anyone other than the above photo'd [yourname] please call [phone number] and the police because this camera was stolen"