The robot doesn’t actually cling to the side of the building, but instead uses a roof-mounted custom rigging system. Wires are sent down the side of the building. SAM is then attached to the wires and climbs up them, it reaches the top of the rigging system and begins its inspection. It takes an image which is then relayed to the operator on the ground. The robot continues to do this until it reaches the bottom of the run. After this is completed the rigging is re-positioned and the process repeated.