What is an "electronic security business"?

Any person who engages in the business of or undertakes to (i) sell, (ii) install, service, maintain, design or consult in the design of any electronic security equipment to an end user; (iii) respond to or cause a response to electronic security equipment for an end user; or (iv) have access to confidential information concerning the design, extent, status, password, contact list, or location of an end user's electronic security equipment.