The present disclosure provides methods and systems for determining the duration of time that has passed since temporarily idle or abandoned resources or property were last in use or possessed. The methods and systems provide for determining the point in time at which resources or property become idle or abandoned and for registering the cessation of use or abandonment event. Thereafter, the methods and systems provide for receiving and responding to queries concerning the temporarily idle or abandoned property and for detecting and registering resumption of use or reclamation events.