Various detecting techniques: magnetism, infrared, spectrum, CCD, genuine bill template. Automatically detecting various super doubtful bills with different face values and from various issues (Issued in 1981, 1985, 1988, 1990, 1991, 1993, 1995, 1996, 2001, 2003, 2004). Automatically identifying all the current American dollar bill issues including color plate $20 and $50 issued in 2004. Build-in calendar with Li-Battery, which helps the users to mark the date. Automatically recording and printing the bill issuing number, face value and sequential number. The data recorded above can be directly uploaded to Internet. The machine software can be conveniently updated. The major parts of this machine are imported.