It should go without saying - but don’t be creepy in public (example below)

I was at the grocery store today and a man came up to me and asked if I would help him sell an old phone (they have a kiosk) to which I said no - but then he just kept starring me up and down, and I tried to politely close the interaction but he insisted that he needed to look at me a little longer. DON’T BE THAT GUY.

It’s okay to say hi to me if you see me out in public, or to even mention that you’ve seen me on the internet - but don’t make it weird.