Diners Club Launches Official App Service "HISTORY" on April 1st to Chronicle Member Journeys with Jewels

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Diners Club (issued by Mitsui Sumitomo Trust Club Co., Ltd.) has launched "HISTORY," an official app service that visually records members' journeys with the card as virtual jewels, starting April 1, 2026. This unique service rewards members with special jewels for milestones like contract anniversaries and spending achievements, aiming to deepen their relationship with the brand and offer exclusive experiences. The announcement also highlights ongoing campaigns for the Diners Club Card and its premium tiers.