title: Progressive Web App Authenticate to API
body: <p>Usually when I build a new website I create a .NET or PHP website. These website either connect to a MySQL DB or an external API. To do this I can securely store my credentials to these services and the back end will authenticate to them. Now since I want to build a Progressive Web App which is front-end only, how can I securely auth to these? Does my PWA have to have a login page that returns an API key that is dynamic? Thanks</p>