What is the deal with this sticker on my windshield?

We call it a FastPass tag and it is not unlike a toll road transponder that a lot of us are used to here in Southern California. This tag has a magnetic strip in it that can be read by our scanners in the express pay terminal lanes for our customers that join one of our unlimited plans. This speeds up the process and makes things easier for our customers. These strips are very sensitive and are designed to self-destroy upon removal so please don’t tamper with them.