最后从安全角度出发在技术、政策等方面就目前移动交易业务的开展提出了几点建议。

In the end the article gives some advice about technique and policy and so on for developing mobile transaction from the view of security.

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PayPal期望今年可以办理移动交易业务金额超过7亿美元，低于通过PayPal交易的总额的1%。

PayPal expects to handle more than $700 million in mobile transactions this year, less than 1 percent of the money processed through PayPal.

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使用这种改进模式可以有效促进移动交易业务的推广，并列举了基于这种改进模式的OTA服务器的具体实现。

With this improvement, mobile trade service will be better promoted. Finally, the paper lists the implementation of the OTA server.

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