Well they work like debit cards in a way, you can't overdraft and you build credit with it. It's what's recommended for newcomers to the US. But I'm not sure th

Well they work like debit cards in a way, you can't overdraft and you build credit with it. It's what's recommended for newcomers to the US. But I'm not sure they're really the same given that your credit limit will be as high as the spare amount of money you can keep as security in your bank.