By default location managers who claim and manage their locations and/or events on Foursquare are able to see who has recently checked into their location and/or event as well as a list of frequent visitors to their location when they’re looking at their Foursquare account.

You can choose to opt out of letting business owners or event managers see this information by going to your account settings and unchecking the box next to ‘Let venue managers see when I check in to their business, or when I am one of their best customers.’