Many experts and systems are in place to reduce losses due to forgery. Usually if the forgery is of something that should be old (like a [[painting]]), experts can examine the materials used to determine if they date from the correct era. Systems in familiar use are the complex ways that paper [[money]] is designed to be difficult to [[counterfeit]], and the special markers [[retail]] clerks can use to determine the genuineness of higher denomination bills when presented. | Many experts and systems are in place to reduce losses due to forgery. Usually if the forgery is of something that should be old (like a [[painting]]), experts can examine the materials used to determine if they date from the correct era. Systems in familiar use are the complex ways that paper [[money]] is designed to be difficult to [[counterfeit]], and the special markers [[retail]] clerks can use to determine the genuineness of higher denomination bills when presented. |