After a minute near one of their offices I do. Macs are either randomized per session, which makes filtering on them pointless, or they are not and still broadcast making them non secure and easily spoofed. Relying on mac filtering is usually only an audit checkbox to check. There is a reason 3 letter agencies used to use them to track people as they are really easy to get and track (until they got randomized by phone manufacturers and OS's).