TextSnap

Text the word "textsnap" to a device running the TextSnap app to instantly snap a photo on the remote device.
TextSnap also has a 5-second timer to snap a photo without needing to be near your device while the photo is taken.

-Good for snapping group pictures.
-Take photos in a room with lots of mirrors such that you don't have to be in the picture.
-See hard-to-reach places such as air vents by tying your device to a long stick and sending it a text message when you want it to snap photos.
-Use as elementary home security system to snap photos of your font door by texting a hidden camera.