Overlay a native layer

Hey guys,

I pretty new to unity and mobile development so I apologize in advance if I get some of the terminology wrong.

I am using Upsight's Unity Plugin and I need to make some parental control so kids would not leave my app to the app store via an upsight placement. what I would like to do is the following flow:

1, user press button and see upsight placement. (which is in a native layer) 2. if user press an app from the placement (i.e before he leaves my app and get directed to the appstroe) he is required to do a 2 finger swipe 3. only after swipe verification user than directed to the app store.

is there anyway for me to put some sort of layer on top of the native placement layer ? is there a 3rd party plugin that will help me do it or any other recommended method to achieve it?