Saw something today that made me chuckle - I was walking up to the infamous CC (Sloane...) this evening (aborted punt as it happens) and saw a guy walking towards me, staring at his phone and looking up at the building names/numbers. He spotted the "CC" sign and then did the sort of "pretending to acknowledge something on your phone" manoeuvre, stopped to read intently and then (not at all) subtly lean against the wall...presumably making the "I'm here" call/text.
It just amused me that he probably thought he was being slick and no one knew... but I (having done exactly the same thing many times) knew EXACTLY what he was up to. I should have winked or something!
Hope you had a good time, sir!