>>>> ...and the banks are working on getting them to be treated as credit cards, I am sure in the very near future most, if not all, will treat them as credit cards and protect them from purchases that are not authorized
No they ain't.
If the banks want debit cards to be more accepted by the public they will get rid of the fine print, handle disputes as if the cards were credit cards, put the money back into the account during the dispute, cancel the bounced check charges, and even pay for interest and penalties that the recipients of bounced checks imposed on the cardholder/account holder.
I, too, was offered a combination debit and ATM card for my checking accounts by two different banks. Both times I specifically asked to have the card be ATM only, requiring a PIN.
It is the merchant/seller's responsibility to prove that a purchase was authorized. If a charge is totally bogus, the cardholder is not going to have any documentation.
Also, taking money and delivering nothing in exchange is fraud. A credit card transaction may be disputed if no goods or obviously different goods are delivered regardless of what state the seller is in or how far from the buyer the seller is. Since the credit card company actually imposed the charge and/or took the money, it is in the loop (involvable) as far as disputes are concerned.
If you win a disputed charge, the credit card company should adjust finance charges on an "as-if" basis, not a "prorated" basis. For those cardholders who pay off the entire balance and avoid finance charges, the "as if the dispute charge never existed" computation usually yields no finance charge while the "prorated between the disputed charge and undisputed charges" method yields "some" finance charge! You the cardholder will have to point this out. Now aren't you glad you didn't sleep through all your high school math classes?