23. A method by which a physical-document monitoring device facilitates management of a physical document, the method comprising: sensing a state of the physical document, with a sensor coupled to a document coupling device; generating a signal representing the document state with the sensor; determining the document state based on the signal with a computer coupled to the sensor and the document coupling device; and generating a wireless signal to send a representation of the document state to a remote device.
23. A method by which a physical-document monitoring device facilitates management of a physical document, the method comprising: sensing a state of the physical document, with a sensor coupled to a document coupling device; generating a signal representing the document state with the sensor; determining the document state based on the signal with a computer coupled to the sensor and the document coupling device; and generating a wireless signal to send a representation of the document state to a remote device. 31. The method of claim 23 , further comprising receiving state data for a non-physical version of the document.