手机本身是一种通讯工具,但随着科学技术的不断发展,手机的附加功能越来越多。拿手机的付费功能来说,由于手机媒体本身还是一种具有小额支付功能的随身携带的电子金融工具,因此可以作为“手机钱包”使用,用户只要发送一条赋予了特殊代码的手机短信即可完成付费,用户在每月缴纳手机通话费时一并支付费用,或者直接从用户的手机话费账户中扣除。芬兰首都赫尔辛基的公交系统从 Mobile phone itself is a communication tool, but with the continuous development of science and technology, additional functions of the mobile phone are more and more. Take the mobile payment function, since the mobile media itself is a portable electronic financial instrument with a small payment function, it can be used as a “mobile wallet”, and the user can send a short message with a special code When the payment is completed, the user pays the fee every time he pays the phone call charge or deducts the fee directly from the user’s mobile phone charge account. Helsinki, Finland’s public transport system from