“The Dark Knight Rises” is only two weeks away from release, and marketing behind the film includes an app called "Gotham City’s Most Wanted," which is exclusive to iOS-run devices, so those with iPhones and iPads can download it from iTunes. Otherwise, you have to go to gothamcitysmostwanted.com. The app uses a device's camera to project a 3D image of the character’s mask onto the user's face. One can post it to a social network.