TOKYO -- Japan's discount store chain Don Quijote (Donki) and convenience store operator FamilyMart will share their databases so that they can tailor promotions to customers, Nikkei has learned.
Info of 30m people harnessed for marketing use as critics say privacy an issue

Japan's discount store chain Don Quijote and convenience store operator FamilyMart hope that by sharing customer data, their marketing efforts will be more effective. (Source photos by AP and Getty Images)
TOKYO -- Japan's discount store chain Don Quijote (Donki) and convenience store operator FamilyMart will share their databases so that they can tailor promotions to customers, Nikkei has learned.