Yelp WiFi helps businesses use their guest WiFi to collect customer information, send promotions, and increase customer loyalty. Provide a Great Customer Experience Show a beautifully branded sign-in page when guests access your free WiFi network. Collect Customer Information Your customers connect to your free WiFi with an email address, social media profile, or phone number. Keep In Touch Reach your customers with email and SMS promotions that are easy to build and keep customers coming back.