Abstract: A method of protecting safety of a driver of a vehicle, the vehicle including a motion sensor, and a seat belt pretensioner of a seat belt is provided. Driving information is obtained from the motion sensor, and a tension value of the seat belt pretensioner is determined according to the driving information. The seat belt pretensioner is controlled to tighten the seat belt with the tension value.

Abstract: A communication device, capable of inputting messages when the communication device is in different orientations, includes an orientation sensing unit configured to detect a current orientation of the communication device, an interface transferring unit configured to invoke corresponding input interface to show on a screen of the communication device according to the current orientation of the communication device when the communication device is in an input mode, and a message handling unit for storing the message contents input in a first input interface and showing the message contents on a second input interface when the communication device is rotated to another orientation.