The human skin surface harbors large numbers of bacteria that can be readily dislodged and transferred to surfaces upon touching, hence the importance of proper hand hygiene by health care practitioners (1, 2). These skin bacteria may persist on touched surfaces for prolonged periods because many are highly resistant to environmental stresses, including moisture, temperature, and UV radiation (3, 4). Therefore, we likely leave a persistent “trail” of skin-associated bacteria on the surfaces and objects that we touch during our daily activities.