Blind Shot is a camera application that allows you to take pictures without being noticed.
You can use it anywhere to take those embarrassing pictures of your friends, without them realizing what you're up to.
Just open the app, point and shoot.
You have an option to save your photos to your camera roll or to store them privately on your phone. If you choose to store them privately you even have an option to password protect them pictures so only you have access to them.