Japan's ruling Liberal Democratic Party (LDP) has proposed making My Number Card registration mandatory, but Digital Minister Matsumoto has urged caution, raising questions about the future of the controversial identification system that affects all residents, including foreign nationals. According to NHK, the LDP recently submitted a proposal to the government recommending that My Number Card acquisition be made compulsory as part of efforts to boost the system's adoption rate. However, Digital Minister Matsumoto expressed skepticism about the effectiveness of such a measure, particularly if implemented without penalties for non-compliance. The minister's concerns center on whether mandatory registration without enforcement mechanisms would actually increase adoption rates. "We need to carefully examine the necessity of such measures," Matsumoto stated, suggesting that the government will take a cautious approach rather than rushing into obligation requirements. For foreign residents in Japan, the My Number Card serves as both a tax identification tool and an official photo ID that can be used for various administrative procedures. The 12-digit My Number itself has been mandatory since 2016 for all residents, including foreigners with medium to long-term status. However, obtaining the physical card—which consolidates the number with photo identification and can be used for online government services—remains optional. The current debate focuses specifically on making the physical card mandatory, not the number itself. The LDP's push appears motivated by relatively modest adoption rates despite government incentives, including linking the card to health insurance and offering point-based rewards for registration. For expats, mandatory card registration would represent a significant policy shift. Currently, foreign residents receive their My Number via postal notification and can choose whether to apply for the card at their local municipal office. The application process requires appearing in person with residence card, passport, and the notification document. Processing typically takes one month, after which cardholders must collect it personally. The practical implications of mandatory registration remain unclear. Matsumoto's comments suggest any obligation might lack penalties, raising questions about enforcement. Would foreign residents face consequences for non-compliance when renewing visas or residence cards? Could it affect employment or banking relationships? These details have not been addressed in current discussions. The debate also reflects broader tensions in Japan's digital transformation efforts. While the government has promoted the My Number Card as central to administrative digitalization, privacy concerns and system troubles—including high-profile data linkage errors in 2023—have dampened public enthusiasm. Foreign residents have expressed particular concerns about data security and the implications of consolidating multiple identification functions into a single card. Digital Minister Matsumoto's cautious stance suggests the government recognizes these concerns and may prioritize improving the system's reliability and public trust before imposing obligations. His emphasis on studying "necessity" indicates that any mandatory measures would require substantial justification and likely parliamentary debate. For now, foreign residents should maintain awareness of their existing My Number obligations while monitoring policy developments. The number itself remains required for tax filing, employment, and opening bank accounts. The card, while optional, does offer convenience for those who frequently interact with government services or prefer consolidated identification. As this debate unfolds, expats should expect continued discussion throughout 2026. The government's final decision will likely depend on balancing the LDP's digitalization ambitions against public concerns and practical enforcement challenges. Until any policy changes are formally announced and legislated, current voluntary registration procedures remain in effect. Foreign residents can stay informed through official Digital Agency announcements and municipal office notifications, which will provide advance notice of any requirement changes affecting their status in Japan.