I’m curious where you live? I live in Minneapolis and basically all the places I’ve worked, as well as visiting friends working a stranger could walk directly into the building. Especially multi-business centers. At one of the places they might have been asked if they needed help, but they wouldn’t be stopped, the receptionist would have just assumed they knew where they were going.

I mean certainly major business like BestBuy Corporate and Target Corporate have security, but most small to medium don’t.