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A comment on Ask HN: What tech were you convinced would take the world by storm but didn't?. Parent comment

Re:Ask HN: What tech were you convinced would take the world... by evan_ on Friday November 17, 2017 @11:08AM (#15723147)
Sort of, you just have a single number but it’s different from your regular cc#
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Re:Ask HN: What tech were you convinced would take the world... by abakker on Friday November 17, 2017 @12:50PM (#15724190)
Doesn't apple pay change the number every transaction?
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