4 ms·They said it works if you are wearing glasses, so it will probably also work with sunglassesby ihuman 9y agoThey said it works if you are wearing glasses, so it will probably also work with sunglassesninju 9y agoGlasses are much more see-thru than sunglasses and therefore it may work with glasses but not sunglassesdjrogers 9y agoThis doesn't use visible light - it's IR.rodiger 9y agoA lot of IR is blocked by sunglasses. I know my IR iris scanner on my S8+ rarely works through sunglasses.