This clever hack turns the iPad’s camera into a button

iPad apps don’t have access to a single physical button, so an app developer found a way to hack one on. Astro HQ, the company behind the drawing app Astropad, uses its latest app to turn the iPad’s camera into a button: you tap the camera, and an on-screen panel slides out; tap again, and it’s gone. It’s a really clever idea that allows controls to be taken off the screen, freeing up space.
Of course, this approach comes with a major downside: the camera has to be on and