Diaper-makers are working to help consumers choose products for adult users with the aid of artificial intelligence and social networking apps. Production of disposable adult diapers in Japan in 2017 rose some 5 percent from the previous year to a record 7.8 billion units, according to recent data from the Japan Hygiene Products Industry Association. Demand is growing in line with the aging of the nation's population. With various types of products on store shelves, however, many elderly people and family members supporting them find it difficult to decide which ones they should choose, an official at Daio Paper Corp. said. Many family members taking care of elderly people work in the daytime, and find it inconvenient to make phone calls to diaper-makers' call centers to ask questions during business hours.