Abstract: A system comprises a database configured to be coupled to a public wide area network. One or more non-invasive physiological test machines are also configured to be coupled to the public wide area network and are registered at the database for performing one or more non-invasive physiological tests for authorized users. A plurality of electronic readers and/or scanners are each associated with at least one of the physiological test machines for controlling use thereof and for reading machine readable codes presented to the electronic reader/scanner. The machine readable code has associated therewith a number of remaining authorized uses, an authorized time period, and an identification code associated with an authorized user.

Abstract: A system comprises a database configured to be coupled to a public wide area network. One or more non-invasive physiological test machines are also configured to be coupled to the public wide area network and are registered at the database for performing one or more non-invasive physiological tests for authorized users. A plurality of electronic readers and/or scanners are each associated with at least one of the physiological test machines for controlling use thereof and for reading machine readable codes presented to the electronic reader/scanner. The machine readable code has associated therewith a number of remaining authorized uses, an authorized time period, and an identification code associated with an authorized user.