Introducing spatial orientation sensitive cellphone messaging system for blind people

It could be difficult and challenging for any person (especially blind people) to inform in an unusual situation for instant help. Falling in any critical situation for blind people is very common. One way to assist them in their unexpected situation by using an app of cell phone is proposed and described in this paper. Every smartphone consists of a good number of sensors. We have utilized accelerometer sensor´s event and have introduced spatial orientation sensitive messaging system. According to our proposed system, A blind people will shake the cell phone in a specific axis so that message from cellphone will go to nearest helping hand destination. Here we have fixed a threshold and time limit so that we can avoid false messages for usual cellphone movements. Our last effort was to track the person using geodata of received message. Qualitative and quantitative performance of this system is evaluated. Moreover the entire messaging system is tested in various constraints and factors.