The nest outdoor camer rocks. It works great with the app and gives you a very clear view of your surrounding, as long as your phone is connected to WiFi or 4G. It also gives you alerts if a person is approaching, or there is some unusual movement or sounds. You can even speak to people via the inbuilt microphone (handy for couriers when you're not at home - you can ask them to leave parcels at the door etc). Installation could be a little tricky, in that you do need to power the unit via a power point, but all the mounting hardware is great quality and the magnetic attachment is really clever. Highly recommended.