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There's the simple expedient of 1) touching potentially contaminated stuff only with your left hand, 2) only touching clean stuff with your right hand, and 3) never cross contaminating your left and right hands. And whenever you can, wash or use 70% alcohol. When I'm out, I always carry a paper towel soaked in 70% isopropanol in my right hand, and periodically wipe my left hand.

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There's a lot of history to this left hand, right hand protocol. I'm assuming you do it in this tradition, or at least as a nod to it?

Yes, of course.

I also have decades of muscle memory with using disposable gloves in a lab context, but that's not so useful when you don't have 100 gloves per day to burn through. But even so, I'm always conscious of what I've touched when, and with what.

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