This is a TOUGH one for many of us, I guess; certainly for me. It depends on whom I'm approaching somewhat. If it's a 90-year-old lady, that's easy... A quick smile or a nod, and they smile back. No problem. But when it's a person my age, it's awkward because it feels like they're glancing at me to figure me out, or as if they're questioning my right to be there or something. I can't accurately describe it, I guess. If it's someone one younger, that's worse. Again, I have no idea why, but it just feels that way. And people DO stare at me and turn around after passing, and that's sometimes a compliment, or sometimes threatening. I'm a bodybuilder, and if I'm wearing a shirt that shows my arms, I get stared at by about everybody. Other men who are also bodybuilders glance, and then turn around and stare after I pass. It's weird. And if that's not enough to make people stare, I have huge feet (size 15E in US size), and people constantly stare at my feet after staring at me as I pass.
Anyway, all that attention is sometimes disturbing for me, but I know that I cause some of it by being a bodybuilder, I guess...
I really would like to figure out what is a comfortable way to act (for me and for the passing party), as I will sometimes lurk off to the side pretending to ogle merchandise in a window, or to pull out my phone and pretend to read a text, or something, until the other person has passed by and I won't have to face them up. I could be wrong, but I can't imagine any NT doing any of these things!
Charles