Of course, it does, and it fluoresces under a UV light to show that you're jabbed. Why do you think all those crazy purple lights are being put up? They were designed to be check points at choke points. If any frens on here, take the Long Island Rail Road into and out of NYC you will notice that a lot of stations have those purple lights install at only the exits of the platforms. It's not "defective" lighting, it's intentional.