I'm playing around with the Stack Exchange API, and have just received my first response from the server using the "Hello World" example.

The next step is to allow the user to log in somehow. From the authentication documentation, I see that I should be using the implicit OAuth 2.0 flow. However, the instructions clearly say:

Open a new window at https://stackexchange.com/oauth/dialog

So, I assume that I must have a browser available to the user so that they can log in (be it through Google, an email address, etc.). Is this correct? If not, is it possible to create my own login screen using my own native UI, by communicating with the Stack Exchange API and authentication servers somehow?