He was literally walking with a stick. 👀

That's a sign that helps identify blind people 🙃 Sometime I play blind, when I walk, when touching grass... is easier when not moving. But try closing your eye when waling, even if with someone in your side, it kind of a struggle. Take time needed to develop the strengths to compensate the missing sense.

What I want to say, he perhaps smell something different in you and wanted to know, wanted to hear your voice. Or perhaps it was just a coincidence.