More Ideas

There are a lot of different ways to sign-in. See below for ideas to customize the way you sign in to your app.

Button Sequence

You can add more buttons to the login screen, and have users push the buttons in a specific order to open the rest of the app.

A "real-life" similar example would be when Hagrid took Harry Potter to Diagon Alley for the first time. Hagrid tapped on a series of bricks to open the entrance.

You could even customize the buttons to make them look like bricks.

Text Input

You could use a Text Input object and implement a basic PIN code or password.