Data Processing System And Method

Abstract

Embodiments of the invention provide a method of authenticating a physical document, comprising obtaining an electronic representation of at least part of the physical document; extracting at least one error detection code from the electronic representation; and using the at least one error detection code to detect errors in image data within the electronic representation. Embodiments of the invention also provide a method of securing a physical document, comprising obtaining an electronic representation of at least part of the physical document; determining at least one error detection code for image data within the electronic representation; and producing a secure physical document comprising the electronic representation and a machine readable marking including the at least one error detection code.

Dependencies are inferred from the claim text.