Although since COVID, we kind of can. It's called a #FistBump
As #PaulMacInnes ( #SportReporter @ #TheGuardian ) put it in April last year
You kind of had to, and #ItWasFun. It felt more #Egalitarian than shaking hands. #TheObamas launched it in non suspicious times and, long before, #TheQuakers too.
But now, #Handshakes are #CreepingBack,
so please be gentle when squeezing hands!
https://www.theguardian.com/commentisfree/2022/apr/22/pandemic-fist-bump-barack-obama-covid