Overview
- Osaka Prefectural Police indicted a 46-year-old man, identified by police as Nishida Yasufuku, after officers found an operable GPS-jamming device in a stolen car; the device was discovered on October 26, 2025.
- Police say the suspect admitted he carried the jammer to "block communications" and that investigators link him to more than ten vehicle thefts in a wider probe.
- A GPS jammer works by emitting noise on the same frequencies used by navigation satellites so a vehicle’s GPS cannot show its location, and Japanese law requires a license from the Minister of Internal Affairs and Communications to install or operate such equipment.
- Investigation Division 3 is examining how the device was obtained and the circumstances of its use as police continue to pursue related theft and break-in cases tied to the same group.
- Authorities and prosecutors describe this as the first nationwide prosecution tying GPS-jammer misuse specifically to auto theft, a development that could lead to closer enforcement of radio rules and scrutiny of gray-market sales of jamming devices.