I need a motion sensor that can detect the different distances from the sensor and also how long the person has been at that distance? Which sensor can i use to accomplish the same?
Thought of using the 1111_0 - Motion Sensor but since it is InfraRed based, i am not sure if it can differentiate between various distances from the sensor.
Another sensor that i have in mind is 1128_0 - MaxBotix EZ-1 Sonar Sensor but i am not sure if that will accomplish what i want.
Help is appreciated!