A few days ago, there have been many new types of counterfeit currency cases that use mobile phone electromagnetic waves to interfere with the banknote inspection machine.The Provincial Public Security Department issued an early warning yesterday. During the banknote test, someone around him continued to use mobile phones.
Playing a mobile phone can be used to fail the money test machine
Reporters have learned from the Provincial Public Security Department Economic Investigation Corps that since July this year, there have been many cases that have occurred in Zhejiang, Shanghai and other places to use mobile phone electromagnetic waves to interfere with counterfeit currency inspection machines and use counterfeit currency.China
During the crime, the suspect purchased valuables or securities with counterfeit currency.When the salesperson inspects the counterfeit currency with counterfeit currency, the criminal suspect uses the G network (GSM) mobile phone to maintain a call status at a distance of 25-30 cm away from the currency test machine, so that the banknote inspection machine is temporarily "deaf" without issuing an alert.Voice.
Police experiments found that at present, most of the banknote inspection machines on the market will fail under the interference of mobile phone electromagnetic waves.Within a distance from 25 cm to 30 cm from the bill test machine, the G net mobile phone can have obvious interference to the banknote test machine, and the banknote inspection machine does not issue alarm sound when testing the counterfeit banknote.The CDMA (CDMA) mobile phone does not cause interference.