[goldenkey]

This is what most security companies do if they are any good. A battery backup with cell connection. Can easily replicate it yourself using a mobile hotspot on an old phone. Along with some usb battery packs. Pretty cheap and easy to make a solution. (Under $50)

[danielpal]

The premise is that having this on the cloud is supposed to make it easier and not require this complex setups. For instance, not needing a recording station in the house that can be stolen or a Telco chipset with an alternative power source.

If you do this on the cloud, you can call from a cloud provider and record outside the house. Nest could easily call you from Twilio after 1 minute of being disconnected and it will achieve the same.

[goldenkey]

Dropcam isnt a security cam. Its for checking on cats or kids. If you need security UPS then you can rig up a battery pack and a backup mobile hotspot with an old phone. I dont see how Nest could reproduce this anyways without adding a simcard and gsm to their cams.