Abstract
In this paper, vibration signals are investigated. Vibration signal is a vibration we use with special purposes or intentions. Vibration signal can transmit information to person through the sense of touch. Vibrators of portable phones are one kind of examples. They tell us only arrival of the call. We can not discriminate who call us. If we are able to make various types of vibration signal, it can help the sense of sight and hearing. The purpose of this study is to research on human sensitivity by vibration frequency, vibration pattern and parts of body that receive signals, and to propose the most suitable vibration signal for information.
