(a) A seller of goods and services on whose premises one or more terminals are established is not, solely by virtue of such establishment or solely by virtue of the processing of interchange transactions in connection with the sale of goods and services, a financial institution and is not subject to the laws governing, or other requirements imposed on, financial institutions.
     (b) Nothing contained in this Act shall authorize the Commissioner to regulate the conduct of business functions or to obtain access to any business records, data, or information of a seller of goods and services that operates a terminal, except as may otherwise be provided by law; nor shall this Act be construed to prohibit or to authorize the Commissioner to prohibit a seller of goods and services from using a terminal to perform internal proprietary functions, including extensions of credit pursuant to an open end credit plan.
     (c) The provision of facilities or services by a public utility subject to the Public Utilities Act in connection with an electronic fund transfer system does not subject the public utility to this Act.
     (d) A financial institution is not subject to the Public Utilities Act solely by reason of acts undertaken in connection with an electronic fund transfer system under this Act unless the financial institution performs acts as a public utility or a common carrier of communications services.