Smartphone data order faces first constitutional test in Japan | The Asahi Shimbun: Breaking News, Japan News and Analysis

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Smartphone data order faces first constitutional test in Japan
By SAORI KURODA/ Staff Writer
October 27, 2026 at 15:37 JST
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!Image 2: Photo/Illutration_The Central Government Building in Tokyo housing the Tokyo and Supreme public prosecutors offices (Asahi Shimbun file photo)_
Japan’s first prosecution for refusing a court order to provide smartphone data is raising questions about whether compelling suspects to hand over digital evidence violates their constitutional rights.
A man in his 30s in Tokyo was indicted in July after refusing to unlock a seized smartphone. At his first hearing at the Tokyo District Court in September, his lawyers argued that “the order is invalid.”
They said his refusal was “based on his constitutional rights and was therefore justified,” and sought his acquittal.
Smartphones contain vast troves of private information, including call and location histories and chat exchanges.
Even before the new system took effect, concerns were raised that compelling people to provide such data would violate their constitutional right not to be forced to testify against themselves.
The man was initially indicted in July for allegedly filing a false application for a foreign national’s status of residence, in violation of the Immigration Control Law.
Because prosecutors did not know the password to a smartphone seized from the man, they obtained a warrant from a Tokyo Summary Court judge ordering him to provide “all data recorded on the smartphone.”
When he refused to unlock the phone, prosecutors filed an additional charge against him for violating the electronic data production order. His lawyers are also seeking his acquittal on the Immigration Control Law charge.
The electronic data production order was created under revisions to the Code of Criminal Procedure enacted in May 2025 and took effect this May. With a judge-issued warrant, prosecutors and police can order businesses or individuals to provide digital data.
Failure to comply is punishable by up to one year in prison or a fine of up to 3 million yen ($19,040).
According to the Supreme Public Prosecutors Office, the man is the first to be prosecuted in Japan under the system since its introduction.
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