I was looking around and trying open a FasTrak account online and noticed the option to open it anonymously. Does anyone have experience with this option? Is it

I was looking around and trying open a FasTrak account online and noticed the option to open it anonymously. Does anyone have experience with this option? Is it more hassle compare to regular account? For me mailing a money order monthly to replenish balance is acceptable but is there any other catch?