An assistive walker for assisting a user in going on foot and for reinforcing recommended walker use technique includes a walker frame including opposed leading and trailing ends formed between opposed handled and footed ends and that together define a user-receiving area extending from the trailing end of the walker frame to the leading end of the walker frame, and the walker frame is for supporting a user in the user-receiving area and aiding ambulation thereof. The walker frame is formed with a motion sensor apparatus including a motion sensor assembly to detect user movement at the user-receiving area, and a signal device operatively coupled to the motion sensor assembly to emit the signal in response to a substantial lack of detected user movement at the user-receiving area.