The invention herein pertains to sensing a ground surface with the foot while walking. Persons having foot and leg nerve damage are often unable to walk without assistance because they can not recognize the ground surface as with normal foot sensory perception. The electrical device herein includes a vibrator which is worn against the skin of the leg and signals the wearer immediately as the foot touches the ground surface. The preferred embodiment of the invention utilizes a shoe having a switch located proximate the heel with the vibrator positioned in a strap surrounding the wearer's knee.