Touchless faucets dispense water via a motion sensor which can detect when you are hand is under the faucet. The touchless feature makes it environmentally friendly and a hygienic choice by eliminating the risk of transferring germs that spread disease. Check out our most reviewed product, the Mandouri Touchless Single Hole Single-Handle High-Arc Bathroom Faucet in Chrome. For more information on different types of faucets and how to choose the right one, check out our buying guide, Bathroom Plumbing Rough-In Dimensions.