Once you have signed up, you pay money into the system by handing cash to an agent (usually a mobile operator's airtime vendor), who credits the money to your mobile-money account.
So, for instance, the Web statistics vendor Alexa gives new users the choice of creating an account by entering a username and a password or by simply clicking the "Connect with Facebook" button.
例如，专门统计网站世界排名的网站Alexa给新用户两种登录选择：一是输入一个用户名、密码来新建一个账号，二是简单的点击“Connect with Facebook”按钮。
3
Details about vendors, such as the vendor name and account number.