This is one of the most handy things I use with my iPhone. It is a very small braille display, perfect for mobile privacy. Unlike the other popular mini display at the time (the braille pen 12) this device has routing buttons, something I believe to be necesary. It also has a five-function "joystick" that enables quick use of the functions like swipe right, left, up, down, and double tap. Therefore, navigation is simple. Six-key entry is nice as well, although sometimes (I believe this is the fault of the iPhone, not the display) it will expand single letters to their contractions. For example, sometimes typing the letter P will write people. This is not related to the location in the word. The display is very small, because there is nothing to the side of the display. If you want thumb keys, whiz wheels, etc. this is not the display for you, but it is quite useful for simple reading and writing on the go.