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I work in a pharma research facility, so people can have literally any disease or chemical on their hands, so we have a lot of doors with hand wave sensors.
Just wag your mitts in front of it, and the door opens. They're on the wall a few steps before the door, so the door is usually open by the time you get to it.
I work in a hospital, we use these long vertical elbow buttons or rfid readers with a badge which is also touchless.
And if I need to push a button like in elevators, I use the knuckle of my ring finger.
Some even have this little touch tool on their Keychain to touch screens or buttons.