Counterfeit 20 Euro Bill Highlights Flaws in Common Detection Methods

Pharmacist Exposes Counterfeit 20 Euro Bill, Highlights Flaws in Detection Pens A pharmacist in Spain recently experienced a case of attempted fraud when a customer tried to pay with a counterfeit 20 euro bill. The incident, which occurred at her pharmacy on June 2nd, 2025, highlights the limitations of commonly used counterfeit detection pens. "I was shocked when the pen didn't detect the fake bill," the pharmacist, who wishes to remain anonymous, stated. "It looked so real, but the professional machine immediately flagged it." The pharmacist's video, which has garnered significant attention online, shows the counterfeit bill failing to react to the pen's test, while a dedicated banknote validator correctly identifies it as fake. This underscores the need for businesses to invest in reliable verification equipment rather than relying solely on less accurate methods. The incident serves as a reminder of the prevalence of counterfeit currency and the importance of vigilance for both businesses and consumers alike. The pharmacist's quick thinking and use of the validator prevented a significant financial loss.