Google uses a more basic system that substitutes a card number for a virtual MasterCard that is used for the transaction. It's not as secure as the token-based system used by Apple, and Anderson said he expects Google to adopt the newer tokenization technology.
There's also a fairly big privacy gap between Apple and Google. Apple doesn't see all of the transactions being made with Apple Pay, but Google does see what its Google Wallet users are buying and where those transactions are taking place. So success for Apple Pay could push Google to give its users a bit more privacy.
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