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As questionable as the usefulness of mobile payments are currently, this is where the future is heading. With Samsung, Apple and Android Pay pushing forward and although Samsung Pay is currently in the forefront (due to its ability to make use of MST) Android Pay is steadily growing. Further expansion to new countries is in the process and businesses making the transition to Android Pay.
Mentioning the future of Android Pay, a breakdown of the latest version is displaying some other features that may be available to Android Pay users soon. Biggest change is users will be able to apply their loyalty cards and gift cards without having to unlock their devices. This will be a useful feature as it will speed up the process of paying for goods in stores which you have a loyalty card or gift card registered. Unlocking the phone to use these cards to allow the customer to quickly make sure their loyalty membership (or gift card value) is included at the start of the transaction can be frustrating.
More than likely, this feature will be limited in that paying for goods using a credit or debit card will continue to require the user to unlock the device. Obvious reasons, security. Loyalty and gift cards are likely to be considered much less of a security risk than credit or debit cards. Thus the lack of having to unlock the phone to utilize them. This being a feature that will work with some loyalty and gift cards, it is assumed that not all of them will be supported.