It's a similar deal with those neighborhood "Area X" parking stickers attached to a piece of cardboard and hung from fenders on bikes. Those stickers are ginormous, not to mention ugly.
...And if they expect me to attach a Fastrak onto my bike they gotta be smokin' crack, too.
They're all examples of weird "practicality" issues that affect us bikes. I saw a metermaid struggling to give a motorcycle a parking ticket for not having the appropriate sticker on his bike once. It was windy and he struggled to find a way to put the ticket on the bike. It kept blowing off because there wasn't a good spot for it. Ahh....the irony.