虽然目前规模最大的备选支付服务提供商还只是为大型零售商服务，但相信这种情况将很快发生改变。

Although the biggest alternative payment provider isn't yet being used by smaller retailers, that'll be changing soon.

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Vocalink是世界上最大的银行同业支付服务提供商(interbank payment processors)之一。

Vocalink is one of the biggest interbank payment processors in the world.

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所有这些使得它成为一种实际可用的的支付系统的条件是：服务提供商必须要将唯一识别符与银行帐号或者信用卡链接起来。

All that's required to turn this system into a reliable payment mechanism is a service provider willing to link that unique identifier to a bank account or credit card.

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