Zipa's point, I believe, is that in many countries, excluding the US, almost all restaurants have portable terminals that they bring to your table and you insert your chip card, enter your PIN and accept the payment. If they don't have portable terminals you go up to the register and pay. The card doesnt leave your posession. Many Americans have no idea of this or how common it is elsewhere, and I've never understood why chips aren't used in the US considering the incredible amount of CC fraud there.
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Is anyone even saying it won't work on a phone? They're saying it'll never be a complete replacement.