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Banknote detectors

A banknote detector (also called a counterfeit tester or money checker) is a small device that verifies whether a banknote is genuine. Place a note on the platform (or feed it through the slot), and the detector checks several authenticity features — typically a combination of UV, magnetic, infrared and watermark — within 1-2 seconds, signalling pass or fail.

Banknote detectors are common at retail tills, restaurant POS stations, hotel reception desks and currency-exchange booths — anywhere staff accept cash from customers and need a quick yes / no on every high-denomination note.

Detection technologies​

  • UV (ultraviolet) — checks UV-reactive printing patterns invisible in normal light. The simplest and cheapest method. Effective against amateur counterfeits but defeatable by good ones.
  • MG (magnetic) — checks the magnetic ink used in serial numbers and security strips. Effective against counterfeits printed on regular paper.
  • IR (infrared) — checks IR-readable elements that don't show under normal or UV light. Hard to fake without specialised equipment.
  • CIS (image) — captures the full image of the note and compares it pixel-by-pixel against the genuine template. The most comprehensive method.

Better detectors combine several methods (often called "multi-detection" or "auto-detection"). The combination matters more than any single feature: UV+MG+IR together catches >99% of circulating counterfeits.

Detector vs. counter — which do I need?​

  • Pick a banknote counter if your primary task is counting large stacks at end of shift. Most modern counters include counterfeit detection on top.
  • Pick a banknote detector if you accept cash at the till one note at a time and need to verify each high-value note as it arrives. Detectors are smaller, cheaper and faster for single-note checks than feeding the note through a counter.

Many businesses use both — a detector at the till for live verification, a counter at the back office for end-of-shift reconciliation.

Documentation in this category​

  • Models — per-model specifications, supported currencies, detection methods and form factor (handheld, desktop, automatic) (see the sidebar as they are added)

Banknote detectors FAQ

What is a banknote detector and how does it work?
A banknote detector is a small device that checks whether a banknote is genuine. Place the note on the detector platform (or feed it through a slot), and the device checks several authenticity features — UV, magnetic, infrared, image — within 1-2 seconds. It signals pass with a green LED and short beep, fail with a red LED and longer alarm. Detectors are designed for live verification at the till, not for counting.
Which detection technologies should I look for?
Combine three or four for solid protection: UV (catches amateur counterfeits printed on UV-reactive paper), MG / magnetic (catches counterfeits printed on regular paper that lacks magnetic ink), IR / infrared (catches counterfeits that lack the IR-readable elements), and CIS image comparison (catches sophisticated counterfeits by comparing the full image against the template). A detector marketed as 'multi-detection' usually combines UV + MG + IR; 'auto-detection' typically adds CIS image analysis.
What is the difference between a banknote detector and a banknote counter?
A detector verifies one note at a time — designed for live use at the till as staff accept payment. It does not count. A counter takes a stack of notes and counts them at high speed — designed for back-office reconciliation at end of shift. Modern counters also include detection on top, but a counter is slower than a dedicated detector for single-note live checks. Many businesses use both: detector at the till, counter at the back office.
Which currencies do HDWR detectors support?
Most HDWR detectors ship with templates for EUR, USD, GBP, PLN and the main European currencies, and can typically be updated with additional currency templates over USB. Check the specific model's specification page for the current list. Detectors that rely only on UV / MG / IR (not on full image comparison) work with any currency that uses those security features — including currencies not in the template list.
Will the detector catch every counterfeit?
No detector is 100% — sophisticated counterfeits printed on lifted-genuine paper can defeat any single method. The realistic expectation is >99% of circulating counterfeits caught when using UV+MG+IR combined. The remaining <1% require physical handling skills (paper texture, watermark held up to light) or specialist forensic equipment. For high-value cash businesses, combine a detector at the till with periodic staff training and a counter with detection at the back office.