I'm in the middle of renewing my US Passport, the expiration date is Aug 2012. I just found out that there is now a Passport Card that can be issued in addition to the standard book, for an extra fee. I tried to search through the Department of State site and didn't really get a clear answer to my questions and thought maybe someone here could shed some light. First, can the US Passport Card serve as a proof of your identity and eligibility for employment much like the traditional passport book can? Second, when first applying for the card and also renewing your passport, do you mark that you are applying for both? Or, do you complete another application that marks that you are applying for the card? I'll be sending them a picture per application so it can be used per item, but I doubt that matters. Per the website, if I've never had a passport card, I need to apply in person since I'll be using a different form. However, it also says I can apply online. I'm not sure wether or not to write one or two different checks, one for the passport book and another for the passport card. It's confusing.