(Help you realize the following wireless functions. First, after you access the hotspot, open the browser and enter any website to display a welcome page of McDonald's store. Second, on this page, customers can enter an authentication key to authenticate (customers can get the authentication key at the store counter with their shop ticket). Third, after entering the correct authentication key, the designated McDonald's home page can be displayed. After that, users can use the Internet freely. Fourth, each authentication key of ordinary customers has a certain use time limit, mainly to attract customers who have been online for a long time at McDonald's to continue to buy things.)