(a) A person is not an owner or operator solely because the person's primary function is to provide for the exchange, transfer, or dissemination of electronic fund transfer data.
(b) A person whose primary function is to provide for the exchange, transfer, or dissemination of electronic fund transfer data and who is not an owner or operator is not liable to a customer or user of an unmanned teller machine for a claim arising out of or in connection with a use or attempted use of the machine.