Stage: Product launch announcement
Koyo’s news listing dated May 29, 2024 announced the release of Diaper Navi for care facilities. The product notice describes using a sensor to make conditions inside the diaper visible to care staff.
Sanwa’s announcement on the same date states that Diaper Navi uses its Kaigo Plus urine-detection system. These notices establish the facility-oriented release, which is separate from the home-care kit announced in 2025. Koyo’s stated aims for workload and product-use reductions are company explanations rather than independently established results.