Gravity sensation also has
some application in mobile phone operation, such as the auto
rotation of screen, fmding pals by shaking, and playing music
by shaking. There is few application of gravity sensation in call
dialing and short message input. The paper utilizes gravity
sensor to perform mobile status coding, call dialing and short
message input, and thus a gravity sensor based visionless
mobile phone for the blind is implemented. It has the following