[MSL]

Currency detector

  A photo of a currency detector from a Chinese supermarket: . A currency detector or currency validator is a device that determines whether money are genuine or counterfeit. More about these devices in Wikipedia: https://en.wikipedia.org/wiki/Currency_detector.

[SEO]

These currency validators (or detectors) are very popular. You can see them in small shops, in big shops, in malls, in supermarkets and so on.