米グルーポン、スマホでのカード決済に参入 – 日本経済新聞
米グルーポン、スマホでのカード決済に参入 日本経済新聞 【シリコンバレー＝奥平和行】クーポン共同購入サイト最大手の米グルーポンは19日、スマートフォン（高機能携帯電話＝スマホ）をクレジットカードの読み取り装置として使う決済サービスに参入すると発表した。同様のサービスでは米スクエア（カリフォルニア州）などが先行して ... |
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