"But he also agrees the commercial and industrial use-cases are “particularly powerful”, with the clear potential for safety benefits and cost-savings across an entire workforce, adding: “Imagine if a restaurant or supermarket knew what was going on automatically with smart sensors — currently, they know nothing — to ‘sense’ anything, they have humans walk around.”

They currently use camera and if they use e.g ...NestCam, where the data is analyzed in real time they can pinpoint an incident in a matter of seconds.... a lot of detail can be dissected out of video and audio along with indisputable evidence.

. NestCam just added a new feature to my account ,  you can now toggle ...on / off "notice people"...and it works. Thing is you can only leave it on so long depending on how many people walk by the front of your house . You just don't need a notification every time somebody walks by... so you'll flip It to Off.

The thing about the user account service,  they just simply upgrade the server issues with  abilities and  the camera just does what it does ...collect data. 

I have cameras with an account.. where the account is an ongoing science project.

doni