Last updated on October 24, 2025
No. Using AI to impersonate someone in Japan is not legally permitted when it infringes on privacy, misleads others, or causes reputational or economic harm. Violations may be subject to civil or criminal penalties under existing laws.
Digital Doppelgängers and the Law
In a country where robots greet you at hotels and vending machines serve hot meals, Japan is no stranger to technological innovation. But even in this high-tech haven, the law draws a firm line when it comes to impersonation—especially when artificial intelligence is involved.
AI-generated voices, faces, and text can mimic real people with uncanny accuracy. While this opens doors for entertainment and education, it also raises serious legal and ethical questions. What happens when someone uses AI to impersonate another person—without their consent?
Legal Frameworks and Ethical Boundaries
Japan does not currently have a standalone law specifically targeting AI impersonation. However, existing legal frameworks cover many of its implications. The Act on the Protection of Personal Information prohibits the unauthorized use of personal data, including voice and facial features, which are considered biometric identifiers. If AI is used to replicate these without consent, it may constitute a privacy violation.
Additionally, impersonation that leads to reputational damage or financial loss can be prosecuted under civil law. The Civil Code allows individuals to seek damages for defamation, misrepresentation, or unauthorized use of likeness. In more severe cases, criminal charges may apply under laws related to fraud or identity theft.
Guidelines for Responsible AI Use
Japan’s government has taken proactive steps to guide AI development. The Hiroshima AI Process, launched in 2023 and endorsed by the G7, outlines principles for safe and trustworthy AI. These include transparency, accountability, and respect for human rights. While not legally binding, these principles influence policy and industry standards.
The AI Utilization Guidelines published by the Ministry of Internal Affairs and Communications also emphasize ethical use, particularly in areas involving personal data and public trust. Developers and users are encouraged to avoid deceptive practices and ensure that AI systems do not mislead or manipulate.
What Counts as Impersonation?
Not all mimicry is illegal. Satire, parody, and authorized simulations—such as voiceovers in entertainment or educational tools—are generally permitted. The key factor is consent and context. If the impersonation is done with permission or clearly marked as fictional, it may fall within legal bounds.
However, using AI to impersonate someone in a way that deceives others—such as faking a video call, generating false statements, or impersonating someone in a business transaction—is likely to be considered unlawful.
See more on Japan
Sources
Hiroshima AI Process – Ministry of Internal Affairs and Communications
https://www.soumu.go.jp/hiroshimaaiprocess/en/index.html
2025-09-30
AI・データの利用に関する契約ガイドライン – Government CIO Portal
https://cio.go.jp/node/2651
2025-06-12