System and method for rendering a set of program instructions as executable or non-executable

A user device comprising:

• a communications interface operable to receive an access-token that includes an expiration indicator;
• a data storage device that contains a first set of computer-readable program instructions and a second set of computer-readable program instructions;
• and
• a processor that is operable to execute the first set of program instructions and the second set of program instructions,
• wherein the first set of program instructions includes program instructions that cause the processor to (i) determine whether the expiration indicator is expired, (ii) render the second set of program instructions as executable if the processor determines that the expiration indicator is not expired, and (iii) render the second set of program instructions as non-executable if the processor determines that the expiration indicator is expired.

At a server device comprising a data storage device, a method comprising:

• at the data storage device, maintaining at least one registered device identifier;
• the server device receiving a first access-token request including a first device identifier that identifies a first remote device;
• the server device determining that the first device identifier matches a registered device identifier being maintained at the data storage device;
• after the server device determines that the first device identifier matches a registered device identifier being maintained at the data storage device, the server device generating an access-token including an expiration indicator, and thereafter transmitting the generated access-token to a communications network for transmission, in turn, to the first remote device.

A server device comprising:

• a processor;
• a data storage device that contains computer-readable program instructions and at least one registered device identifier;
• and
• a communications interface that is operable to receive a first access-token request including a first device identifier,
• wherein the first device identifier identifies a first remote device, and
• wherein the computer-readable program instructions comprise program instructions that are executable by the processor to (i) determine that the first device identifier matches a registered device identifier contained at the data storage device, and responsively generate a first access-token that includes an expiration indicator, and (ii) cause the communications interface to transmit the first access-token to a communications network for transmission, in turn, to the first remote device.

At an intermediary device that interfaces to a user device and to a server device, a method comprising:

• the intermediary device obtaining a device identifier that identifies the user device;
• the intermediary device transmitting to the server device an access-token request including (i) the device identifier that identifies the user device, and (ii) a device identifier that identifies the intermediary device;
• the intermediary device receiving from the server device an access-token including an expiration indicator;
• and
• the intermediary device transmitting the access-token including the expiration indicator to the user device,
• wherein the user device uses the expiration indicator to determine whether a set of computer-readable program instructions maintained at the user device should be rendered as executable or as non-executable.

An intermediary device comprising:

• a communications interface that interfaces to a user device and to a server device;
• a processor;
• and
• a data storage device that contains a first device identifier and computer-readable program instructions that are executable by the processor,
• wherein the first device identifier identifies the intermediary device,
• wherein the computer-readable program instructions include instructions that (i) cause the processor to determine a second device identifier that identifies the user device, (ii) cause the communications interface to transmit to the server device the first device identifier, the second device identifier, and an access-token request, and (iii) cause the communications interface to transmit to the user device an access-token that is received by the communications interface after the communications interface transmits to the server device the access-token request,
• wherein the received access-token includes an expiration indicator, and
• wherein the user device uses the expiration indicator to determine whether a set of computer-readable program instructions maintained at the user device should be rendered as executable or as non-executable.