Abstract: An apparatus and method are disclosed for tamper-proofing two-dimensional, optical, computer readable bar codes, including QR Codes. QR Codes, like traditional bar codes, contain computer readable content not cognizable by the human mind. The present invention teaches means of securing this content from would-be thieves and forgers motivated to overlay authorized, original content with unauthorized, replacement content.

Abstract: An apparatus and method are disclosed for tamper-proofing two-dimensional, optical, computer readable bar codes, including QR Codes. QR Codes, like traditional bar codes, contain computer readable content not cognizable by the human mind. The present invention teaches means of securing this content from would-be thieves and forgers motivated to overlay authorized, original content with unauthorized, replacement content.

Abstract: A method, computer program product and system are disclosed for procuring, identifying, collecting, analyzing and tracking potential buyers and investors of real property using an electronic network like the Internet. A central managing authority uses uniquely configured data processing devices and signage bearing QR Codes to induce potential buyers of real estate to electronically contact the central managing authority in manner which allows the central managing authority to track when, how and where the potential customers where induced to make contact. The disclosed method and system uniquely assist the central managing authority in the solicitation of the newly acquired sales leads to save expending inefficient amounts of time and money inherent in realizing traditional methods. Signage is printed bearing and RFID tag or two- or three-dimensional bar codes, such as a QR Code, and positioned in accordance with a predetermined criteria.