[jamiequint]

How do you know what businesses have cameras to count visitors before going into the business?

[lkiernan]

How do I know what physical trackers are being used before entering a physical location? I use my eyes.

Business often count foot fall with IR or laser; it's generally on the door. How do I know that using a businesses with cameras claiming to only count traffic are not actually gathering a whole lot more information to use/sell/change their mind later?

I have no skin in this game but the original comment was more focused on "we've decided to bypass your adblocker because we feel that our interests outweigh yours"

[xfer]

Noone puts up cameras to count the visitors. They put them to monitor their activity.

[SahAssar]

Actually some people do, and a lot of people use their existing surveillance cameras for people-counting. see for example https://www.axis.com/en-us/products/axis-people-counter