Once upon a time, Snapchat was simply a means to an end: basically, sending dirty pictures that could be easily erased. As an added security measure, anytime you send a photo, and someone takes a screenshot, you'll get notified, so you're always in the know on who has pictures of what.
That said, for anyone to get your snaps, they'll need to have the app installed as well. Just take a quick snapshot, add a message and choose how long you want your snap to be visible to your friends. Share your favorite events live or record them as video messages that automatically disappear without leaving a trace after a few seconds. Snapchat is an app that keeps you in touch with friends and family thanks to its interactive multimedia messaging system.