Browse Prior Art Database

Automatic Detection of Check Forgery

IP.com Disclosure Number: IPCOM000119623D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 54K

Publishing Venue

IBM

Related People

Double, GP: AUTHOR [+4]

Abstract

Disclosed is a system for the automatic detection of forged checks and similar documents by using special inks and/or encoded characters or marks which provide distinguishing characteristics between valid and forged documents and may be utilized by human and/or machine processes.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 57% of the total text.

Automatic Detection of Check Forgery

      Disclosed is a system for the automatic detection of
forged checks and similar documents by using special inks and/or
encoded characters or marks which provide distinguishing
characteristics between valid and forged documents and may be
utilized by human and/or machine processes.

      One embodiment requires the use of inks on the valid document
which cannot be copied in a color copier, or reproduced in an office
printer, the objective being not to make forgery impossible, but
highly complicated.  A CCD camera with TV monitor for human viewing
of the image or a CCD scanner in a machine system such, as the IBM
ImagePlus* HPTS* (High Performance Transaction System) for automatic
check processing, can differentiate between the spectral response of
selected valid inks (such as fluorescent or infrared drop-out) and
inks or toners used in copying machines or computer printers to
create forged documents which appear identical to valid documents
under direct human viewing.  In the HPTS system, recognition
algorithms could be used to flag the computer records for the
documents which are detected as forged.

      A second embodiment requires the use of encoded information
which is printed on the check.  This system would require
standardization and regulation of the documents and a public key
cryptographic technique.  Checks issued by financial institutions of
cooperating businesses would be cryptographically "signed" by t...