Identifying electronic devices using temporally changing information

At least one computer-readable storage medium, excluding transitory signals and carrying instructions, which, when executed by at least one data processor of a system, cause the system to:

• obtain, by a reader device of a kiosk configured to process electronic devices, from an electronic device, an indicator,
• wherein the indicator includes a unique identifier associated with the electronic device and a proximity indication that the electronic device is proximate to the reader device;
• verify, by the reader device, the indicator by:
• verifying that the indicator includes the unique identifier;
• verifying that the unique identifier is stored in a database associated with the reader device;
• and
• verifying that the indicator includes the proximity indication that the electronic device is proximate to the reader device;
• and
• upon verifying the indicator, determine that the electronic device has been previously evaluated.

A system comprising:

• at least one hardware processor;
• and
• at least one non-transitory memory storing instructions, which, when executed by the at least one hardware processor, cause the system to:
• obtain from an evaluated device an indicator,
• wherein the indicator includes a unique identifier associated with the evaluated device and a proximity indication that the evaluated device is proximate to a reader device of a kiosk configured to process electronic devices;
• verify the indicator by:
• verifying that the indicator includes the unique identifier;
• verifying that the unique identifier is stored in a database associated with the reader device;
• and
• verifying that the indicator includes the proximity indication that the evaluated device is proximate to the reader device;
• and
• upon verifying the index indicator, determine that the evaluated device has been previously evaluated.