The following case study illustrates how you could integrate and reuse existing applications using an SOA approach to handle the middleware operations of a credit card payment system.

下面的案例研究说明了如何使用SOA方法集成和重用现有的应用程序，以便处理信用卡支付系统的中间件操作。

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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.

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。

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Bad Piggy Bank -- an SMS-based payment system the company is still testing that will make it possible for users to pay for games without the need to register or use a credit card.

坏小子存钱罐（Bad Piggy Bank）： Rovio公司正在测试的一项基于短信服务的支付系统，用户可以使用它支付游戏而无需注册或使用信用卡。

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And London's Transport Authority has promoted the Oyster card, a magnetic payment system that keeps track of where people have been and when.

VOA: standard.2010.04.01

There have also been complaints after the card payment system failed at Wembley Stadium.

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The company has also won high marks for its new Arch Card payment system, effectively a store credit card.

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In the past, most internet transactions required a credit card or an online payment system like PayPal (NASDAQ: EBAY), creating an effective digital paper trail for people engaging in online transactions.

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