What is wrapping foil around door knob?

Wrapping foil around a door knob is a simple and inexpensive way to protect against static electricity shocks. When a person touches a door knob, the electrical charge on their body can discharge and create a static shock. Wrapping the door knob with foil can help to dissipate this charge, reducing the likelihood of a shock. Foil is a good conductor of electricity, so it can act as a bridge between the person and the doorknob, allowing the charge to flow harmlessly through the foil instead of through the person's body. To wrap a door knob with foil, simply tear off a small piece of foil, wrap it tightly around the knob, and smooth it down so that it adheres firmly to the surface.