Using a wireless CCTV video camera with Vera Lite

I apologise in advance if this has been answered elsewhere - but I have searched and can’t find a good answer…

My brand new Vera Lite has just been set up and I am looking for simple ideas for what to automate first. I like the idea of having a motion activated camera above the front door so I can see who comes to the door while I am out (plus for security).

Is there such a device, and how would I view the video? Ideally I would like one that is mains powered and as small and unobtusive as possible.

Thanks for any suggestions