Universal signal for monogamish / adultery? Anklet or something else?

Long time lurker here with more experience in this lifestyle than I'd care to admit (at least to my vanilla friends).

Has anyone ever thought of developing a signal or sign so that others could know you stepped out from time to time? Sometimes I wish there was something as simple as slipping in a unique code word (like Orange or Apple) into a conversation that doesn't fit so that the other person knows.

Of course you would have to think ahead so you don't sound stupid but its an idea. Kind of like how with swingers the woman wears an anklet on the right ankle to signal she plays. Or when women like BBC and they use the Ace of Spades (either as jewelry or as ink).

Would certainly make it a lot easier out there other than playing these soft and subtle clues back and forth.