The function is not so much to prevent contamination—toes are normally contained within footwear that protects them—but to protect an injured toe against further damage from friction and pressure by continual rubbing against other toes and shoes.
They are consequently made partly or wholly of a soft material such as a mineral oil gel, and the end may be either open or closed.
They are used in medicine to limit patient exposure to infection, and to protect health professionals from contact with bodily fluids that can transmit disease.
[3] Finger cots have been used during the COVID-19 pandemic to limit contamination for voters using touch-screen voting systems in the 2020 U.S.
[4] Finger cots have applications in many workplaces, mainly to protect objects which can be damaged by exposure to the skin's natural oils, skin particles, and dirt on hands.