Having used contactless cards, I'm not sure if I agree with the comparison. Contactless cards don't save you just seconds, since people in front of you in the l

Having used contactless cards, I'm not sure if I agree with the comparison. Contactless cards don't save you just seconds, since people in front of you in the line use them also. It quickly adds up to minutes every time you make a purchase. This type of benefit can't be directly inferred from smart locks or smart lighting.