为了享受数字支付的便利，许多老年人开始使用智能手机。
To enjoy the convenience of digital payment, many senior citizens started to use smart phone.
这类系统的典型应用-如移动数字支付-在多年前已经开始萌芽。
Some obvious uses for these systems—such as mobile digital payments—have been bubbling under for several years.
6月Facebook推出了一套储值卡系统，允许用户轻松支付网站上的数字商品和服务，从每笔交易收取一小笔佣金。
In June Facebook launched a stored-credit system that allows users to pay easily for digital goods and services on the site, which pockets a small commission on each transaction.
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