Assistive technologies for walking on slopes

・The motor mounted on the walker helps the user to push the walker uphill.
・The motor works as a brake, controlling the speed of the walker going downhill.
・The walker stops as soon as the user releases the handles.
・The walker senses the user applying a push or pull to it through its handles and automatically controls itself to go forward or backward. It also controls its moving speed, depending on the level of the force it senses.