（ニッキィの大疑問）QRコード決済、なぜ急増？ ネット企業や金融機関が注目 – 日本経済新聞
（ニッキィの大疑問）QRコード決済、なぜ急増？ ネット企業や金融機関が注目 日本経済新聞
「XXペイ」という文字を見かけない日はないわね。スマートフォン（スマホ）を使う決済のようだけど、どこがどう違うのかしら。QRコードを使う決済の現状と行方について、河野 …
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