"anecdote" APP. According to the hotel code scanning rules, download the "Know-it-all" APP to register and log in. After entering the page, select "Authorized Authentication" and perform face recognition according to the prompts. The front hall is located in the room or lobby leading to the main room, also known as front desk, front desk and front desk. It is the nerve center of the hotel and can be used as a reception room to promote hotel products and services.