You need a key, which means you can't use it without an account number and password. If you want to surf the Internet, you have to have your own wireless Internet account, but during the Asian Games, you can surf the Internet for more than a month for free. You can consult your mobile phone service provider for specific methods. How to use it is also simple. Take Guangzhou Telecom as an example. During the Asian Games in Guangzhou, mobile phone users can dial 400899 189 to apply for a free WiFi experience account and password for Telecom. Users can surf the Internet free of charge through the automatic login page in the hot spot coverage area of telecom WiFi, and can input money, account number and password. And it is not limited by the duration of WiFi access.