It absolutely does. I presume you're talking about transaction security, since debit cards have long existed for convenience, and again: once you send money fro

It absolutely does. I presume you're talking about transaction security, since debit cards have long existed for convenience, and again: once you send money from a checking account, it's gone. If I have a dispute on a transaction, it's far more difficult to reverse. The very nature of credit makes dispute resolution much easier.