to identify the authenticity of a banknote, we must be familiar with the characteristics of the genuine banknote and the main anti-counterfeiting technologies. There are mainly the following identification methods:

First, look at the watermark, and look at the RMB in the light. The counterfeit currency watermark is generally printed with light ink on the front or back of the banknote; There is also a counterfeit money watermark, which is to uncover the paper, coat a white paste in the interlayer, and then press a mercury stamp on it. Real money watermark is vivid and vivid, with strong three-dimensional sense. Counterfeit money watermarks lack three-dimensional sense, and are mostly composed of lines, which are either too clear or too vague. The second is to look at the security thread. The "security thread" of counterfeit money is either printed with light ink and blurred, or a silver plastic thread is manually sandwiched, and it is easy to find the silver-white thread that has not been cut at the end of the banknote. The fifth set of RMB security line has miniature characters, and the counterfeit words are unclear, and the line activities are easy to extract. The third is to see whether the color of the banknote surface pattern is bright, whether the lines are clear, whether the wiring is in good condition, and there is no blank space or gap.

Second touch: As RMB is printed in intaglio, the lines form ink channels protruding from the paper, especially in Braille dots, the words "People's Bank of China" and the fifth set of portraits of RMB. When you touch these places with your fingers, you will feel more concave and convex. At present, the counterfeit money collected is printed by offset printing, which is smooth and has no concave-convex feel.

third listening: RMB paper is special paper, which is firm and crisp, and the new banknotes will make a crisp sound when you flick them with your fingers. Counterfeit paper is soft, thin, stuffy and not resistant to rubbing.

four measurements: fluorescence detection is performed with a simple instrument. First, whether the paper has fluorescence reflection is detected. RMB paper has not been bleached by fluorescence, and has no fluorescence reflection under fluorescent light, so the paper is dark. Counterfeit paper is mostly bleached, which has obvious fluorescence reflection under fluorescent light, and the paper is white and shiny.