Most of us still associate Amazon with free shipping and VOD, but the company really wants a piece of the government action. Whatever it hasn't tied up in hosting and storage, it's looking to collect via surveillance tech. Amazon is selling as much facial recognition software as it can to law enforcement agencies despite recent controversies and now it's hoping its home products will attract more subsidized deployments. Local law enforcement provides the public with cheap or free doorbell cameras and swings by for the footage whenever needed. Who isn't going to feel obligated to hand this over to the cops when they come asking?Today's best Nest Hello deals?$173. 88ViewRecommended RetailerReduced Price$229$189View$229View$287. 49ViewShow More DealsWe check over 130 million products every day for the best pricesWith video doorbells, video and audio quality matter, but the real trick is getting the notifications just right. That way, you're not bombarded by alerts, but you don't miss anything important, either. The Nest Hello $199 succeeds by continuously recording video, so you never have the frustrating experience of firing up the app just to see video of someone walking away. Facial recognition lets you know who's at the door by name, and it can also distinguish between people and cars. What's more, you can separate the field of vision into multiple zones, which helps you customize the notifications.