There are various money handling machines to count, batch, sort, add, align, arrange, denominate, and protect both US and International coins and currency bills. Coin counters and coin sorters count coins and tokens rapidly with fail-safe accuracy. Some coin counting machines can automatically deposit coins into bags or pre-formed coin wrappers. Bill counters count the number of currency bills, checks or coupons collected and provide unit counts or numeric dollar totals of the currency counted. Mixed Money counting machines are also available for counting and totaling "mixed bills". Counterfeit detectors identify fake currency using magnetic sensors, ultraviolet bulbs and infra-red light to check for watermarks, magnetic properties and intricate markings. Many cash counters include this detection feature. Bill counting machines are a small investment to ensure accurate counting and eliminate the time and errors of manual counting.