Multi-layer bar code arrangement using wavelength separation

• Main Author: ORRIN D. CHRISTY
• Format: Patent
• Language: English
• Published: 28.10.1999
• Edition: 6
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

A substrate capable of receiving and retaining imaging is coded so as to maximize the amount of the scannable information that can be packed into an area, and/or to provide an effective security feature. A first machine readable identification code (e.g. bar code) is imaged on a predetermined area o...