Wave A Word
by: Rapture Apps • 3
Move your phone from side to side in a dark place and your phone will spell out a word for all to read.
The app displays each letter of your chosen word full screen in quick succession, vibrating the phone at the end of the word. So as you move your phone back and forth, the word is spelt out due to the way your brain remembers what it has seen. Much like the way you can draw a letter using a sparkler at a fireworks display.
For example you might want to tell a DJ in a nightclub that he is playing a "tune" or say "hello" to someone on the other side of a campfire.