Eastern Asians got it right, the bow is the way to go.
No contact with the other party necessary.
A bow or a head nod would work for me, though I think that some of those cultures take it a
liiittle too far with all the rules, and the durations of greetings.
You exist, and I know that you exist. My acknowledgement of your existence is quite implicit in the fact that I'm speaking to you. Five hours of elaborate greetings isn't really necessary.
Side note: I much prefer handshakes with women to handshakes with men. At least in my experience, with women, it's done as a simple type of greeting. With men, it's a competition to test bone density.
(And a passing thought on these various interesting behaviors: If one person does it, it's a mild obsessive mental disorder. If everyone does it, it's a custom.)