Electronic label and archiving system for items using the labels, uses 'smart' label with internal time clock and stored expiry time, with communication circuit activated when time clock goes beyond stored expiry date

摘要

The electronic label (2) is attached to an item. The label has a central unit (5) including storage for an identification code and for temporal data, and also has a time clock (7) whose output is compared (9) with the temporal data. If the item is past its expiry date, a communication circuit (4) is activated to send a warning signal to an external device (1).