A method for altering text displayed in a formatted page, including locating a buffer of memory locations containing contents of a formatted page, locating a first text string between two markers within the buffer, the first string being an encrypted text including N characters, replacing the first text...http://www.google.com.au/patents/US7657759?utm_source=gb-gplus-sharePatent US7657759 - Method and system for copy protection of displayed data content
