Ben Heckendorn did luggage like this on The Ben Heck Show: http://revision3.com/tbhs/robotluggage
They use ultrasonic sensors which are better for short-distance detection and more directional than radio.
Ben Heckendorn did luggage like this on The Ben Heck Show: http://revision3.com/tbhs/robotluggage
They use ultrasonic sensors which are better for short-distance detection and more directional than radio.