My eye keeps catching any bulletin board that I see, whether at a restaurant, grocery store, or whatever. And it’s interesting to me what people put on them. It has always fascinated me since I was young. I would always just stop and look around at how people advertise their businesses.
Some people are deliberate, and create a poster or flyer specific to the target audience. Very few and far between those ones. Others just seem to slap up a business card and call it a day. I think the business cards just get lost in the bulleting board sea. It’s funny though because it’s hard to know if any of it working. Are people tracking to the bulleting board level? My guess is no.
When dropping credit cards there isn’t really much tracking to be done. You might ask the customer how they found you, but that’s about as far as it can go.