Banks are worried that a push to implement new technologies for processing debit and credit card transactions could hurt their bottom line, according to a new study.

The study, by researcher Paul Martaus of Clearwater, Fla., and Payment Systems Inc. of Tampa, Fla., gauged industry support for a range of new security technologies weighed by Visa and MasterCard International. These included so-called PIN pads so consumers can enter identification codes at the point of sale, and electronic "water-marking" of cards to prevent counterfeiting.

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