In the earliest days of mobile wallets, there was much debate over whether to focus on using QR codes — which can be displayed on any phone's screen — or to wait for more phones to support Near Field Communication, which provides a more streamlined experience. The biggest concern was betting on the wrong horse.
Experts worried that NFC and QR would be the next Betamax and VHS, with only one winner. Today, the technologies are more like Coke and Pepsi, with each appealing to different tastes.
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