Screensaver app on Windows Phone 8.1

Question

I would like to create an app which would pop-up fullscreen when user is not interacting with the device; the first tap would then close it. So it's exactly like a screensaver. It should "run" 24/7. Display should always be lit. Battery is of no concern.

I've already done this on android, but my WP skills are lacking and complete research would take me at least a couple of days, so I'm asking any WP gurus out there:

can the same functionality (screensaver) be achieved on the Windows Phone 8.1 platform? If so, which are the basics that should be covered (programming-wise)?

Edit : The only solution I have at this moment is changing the LockScreen background on a 30minute interval. I'm still not sure whate happens in 2 weeks as some info suggests that the registered task will expire. Not to mention that LockScreen is shown only a few seconds.

Edit 2 : Subquestion: is there a way to keep LockScreen shown at all times (while charging)? Or maybe lauch lock screen from code?

Answer 1

Windows Phone doesn't usually allow apps to pop up on their own. Exceptions are made for specific usecases such as voip . There is also no way for an app that isn't running in the foreground to realise that the user hasn't interacted with the screen for any number of minutes.

Therefore your only option is to use the inbuilt lockscreen functionality .