A system and method of reporting a status of another system through an electronic price label (EPL). The system includes the EPL and a computer coupled to the EPL which monitors the status of the second system and causes the EPL to display a status message indicating the status of the second system....http://www.google.de/patents/US6009538?utm_source=gb-gplus-sharePatent US6009538 - System and method of reporting a status of another system through an electronic price label system
