Introduction

Whether before demonetization or after demonetization, a discussion on fake currency notes has been doing the rounds. Counterfeiting is a major problem in banknotes. To prevent counterfeiting various types of security features has been included in currency notes. These security features make currency difficult to counterfeit. Each currency has special features such as micro lettering, paper quality, intaglio printing, watermark, identification mark, security thread, latent image, optically variably ink, see through register etc.