Are biosensors waterproof or water resistant? The Lingo biosensor is water resistant and will withstand being worn in water up to depths of one metre (3 ft) of water for up to 30 minutes. You can bathe, shower, and swim while wearing your biosensor. Related to Wear Related articles How long can I wear a biosensor? Can I still use a biosensor after it expires? Does applying a biosensor hurt? What is a Lingo Count? What if my biosensor comes off too soon?