No, you don't have to buy a 529 Shield (Project 529 Protected decal) in order to use our service. Our service is completely free to use. We wanted to make sure that bike protection could be accessible for all.
However, if you would like to add another layer of theft deterrent and unique identifier to your trusty steed, then please be our guest and purchase one here. We created them to be highly weather/tamper-resistant, and heck, we think they look pretty cool, too.