What is wrapping foil on doorknob when alone?

There are many different reasons why people may decide to wrap foil around a doorknob when they are alone. Some people believe that doing so can help to protect them from potential intruders or people who may try to break into their home. The idea is that when someone tries to turn the doorknob, the noise of the foil crinkling will startle them or alert the homeowner to their presence.

Others suggest that wrapping foil around a doorknob can also help to ground static electricity, which can cause uncomfortable shocks when touching certain types of handles. This is especially useful in dry climates or when there is low humidity in the home. Additionally, wrapping foil around the doorknob may make it more slippery, making it difficult for someone to grab onto and turn.

Overall, while the practice of wrapping foil around a doorknob may seem unusual to some, many people use this trick as an added layer of security or convenience when they are home alone.