Abstract: A system identifies a reference document and an associated explanatory document, the reference document containing information to support an explanation contained in the explanatory document. The system provides control of navigation of the reference document to a first electronic device. The system initiates a local authorization of a second electronic device to authorize the second electronic device to display the explanatory document when the second electronic device is detected as physically proximate the first electronic device. If the local authorization is successful, the system synchronizes passive navigation of the explanatory document at the second electronic device with the navigation of the reference document at the first electronic device.