The Ring Doorbell Camera security system was acquired by Amazon. They currently offer doorbell cameras and exterior security lighting cameras. And according to their website product page, Ring will soon be adding indoor security and environmental protection products to their lineup as well. This is great news based on how popular their current products have become.
3 - If you do not answer the alert fast enough, you are locked out-- even though someone is standing at your front door. You cannot "turn on" the camera from your phone or tablet. If someone is there and you do not have an "ACCEPT" button on the screen, there is just no way to see or talk to them. This is obviously a software flaw. You should always be able to "wake" a camera remotely and talk to a person at your front door. Or maybe you just want to see the view outside your front door. You should be able to access the camera / microphone and enjoy your front yard.