Item tracking system with electronic tracking labels containing sensors

An item tracking system with electronic tracking labels, comprising:

• a tracking label comprising
• a label configured to be attached to an item;
• a flexible electronic circuit attached to or integrated into said label, said flexible electronic circuit comprising
• a controller;
• a power source;
• a wireless communications interface;
• a unique identifier;
• and
• an activation mechanism configured to modify an activation input when a user or an activation device performs an activation action;
• wherein
• said flexible electronic circuit switches to an active state when said activation mechanism modifies said activation input;
• said tracking label configured to communicate with a server coupled to a database comprising a tracking history associated with the tracking label, wherein said server is configured to
• receive one or more tracking label update messages associated with said tracking label, wherein each tracking label update message of said one or more tracking label update messages comprises
• said unique identifier of said tracking label;
• a time;
• a location of said tracking label at said time;
• and
• add contents of said each tracking label update message to said tracking history associated with said tracking label.