I can understand the concern now, but the idea I was getting at with the Greendot card is only put exactly how much money you will need on it. Having a greendot card saved my ass once when I lost my wallet. I had put most of my cash on it and had I not done that, I would have lost all my cash and been stranded in a strange city. As it played out, I only lost about $60 bucks in cash.
I have lost several greendot's and you call them immediately, they freeze your card, close that account and transfer the money to a new account and mail it out to you.
If you only put $50 bucks on it and it's stolen, and you don't report it stolen/lost in time, you've only lost $50 bucks vs all your cash and credit limit available to whomever.