METHOD AND SYSTEM FOR EMBEDDING DATA IN A TEXT DOCUMENT

摘要

The present invention relates to a method and system of embedding data in text documents. The method includes obtaining a document having dimensions and at least a first character and a second character and determining a length between the first c haracter and the second character to define an inter character space. A reference length is determined where the reference length is a function of the dimensions of the text document. A threshold length is determined where the threshold length is a minimum length wherein information is not encoded in the inter character space if the inter character space is not within the threshold length. The information is encoded into an altered inter character space wherein a length of the altered inter character space is an integral multiple of the reference length or a non integral multiple of the reference length.