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4. Operation (cont.)
4.2 Suspicious Bill Warning
This equipment checks the Magnetic (MG), Infrared (IR), Watermark
(WM), Ultraviolet (UV), and other characteristics of the bills analyzed. If
any of these security features do not pass the authentication of the bill, a
red indicator will display, and two beep notifications sound. If a bill is
detected as suspicious, we recommend passing the bill at least three
more times in different positions. Bills can be rejected due to different
reasons, such as:
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Bills are too crumpled
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Bills are very stained or dirty
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Ripped bills
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Wet bills
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Bills stuck with adhesive tape or stapled
