Conductive tapes are used in all kinds of smart textiles, but the metal wires are not elastic. So to make elastic conductive tapes, you have to innovate.

The metal wires in all these conductive tapes are stitched in a curved configuration so they are able to follow the direction of stretching movement.

Elastic conductive tapes are used in smart wearables like sportswear and wearables that monitor your physical condition, such as blood pressure, heartbeat, etc.