System and method to efficiently switch between paper, electronic and audio versions of documents

摘要

A system and method for automatically and conveniently switching among paper, electronic and/or audio forms of a document or other data file by utilizing specialized versions and devices. Each version of the document has a plurality of identifying indicators representing specific locations. The accessing device automatically identifies the indicator associated with the last location accessed and transmits that indicator to other devices by a communication means. Those other devices then access the location in the alternative version corresponding to the location last accessed in the first version. The invention also allows for coordinated access to a document by multiple users on a number or variety of devices.