Chrome app Vysor now allows users to build their own Android device farm - remotely. Just what you've always wanted. That is assuming you're the sort of person who has a whole bunch of Android phones and tablets and whatnot. Even if you're not, the newest feature on this app allows you to access your Android phone's fully interactive screen via your PC or Mac or Chromebook both through a USB cord remotely and through any computer connected via a shared link. Easy peasy.