Can another application launch popup when user is browsing
<p>My company has a need to display a warning popup in the browser if employee visits URLs with their Android phone that are in the deemed "dangerous". Not my idea and I don't particularly agree but my job is to research for solution.</p>

<p>I think there's two major questions I would appreciate answer for:
1) Is there a way to monitor URLs visited (1-2sec polling is probably acceptable)?
2) Can background app initiate popup in the browser or inject into DOM?</p>
