Selfie App takes a selfie every time you open your MacBook's lid.
Selfie App uses a FaceTime (iSight) camera to take a selfie photo every time you open the MacBook lid (or just wake MacBook or iMac from sleep). Moreover, the photo is captured before you log in. People who don't know your password will be photographed anyway! If you choose a Dropbox folder as a destination for your selfies, you'll get them automatically synchronised and available from other devices. Some people switched from PC to MacBook just to have this app! :-)