The biggest appeal with these systems comes from using a single app to control all of the smart home devices. WarrantyIt is common among consumer electronics to find a one year warranty. Longer warranties give you more time to replace the unit if it stops working due to a manufacturing defect. The longest warranty we saw, found on both the Nest Cam and the Belkin NetCam HD+, is two years. More Home Security Guides:The Best Home Security SystemsThe Best DIY Home Security SystemsThe Best Whole Home Surveillance SystemsRelated Product ReviewsNest CamFlir FX FXV101 HD Link DCS 2630LSamsung SmartCam HD Pro SNH P6410BNNetgear Arlo Q VMC3040Belkin NetCam HD+ F7D7606OcoTend Secure Lynx Indoor Tend Secure Lynx Indoor Tend Secure Lynx Indoor With the Tend Secure Lynx Indoor Camera, you'll know when your friends and family are in your house immediately through facial recognition technology. Shop Amazon Doesn't expireNetatmo Welcome Indoor Security Camera Netatmo Welcome Indoor Security Camera Netatmo Welcome Indoor Security Camera The Netatmo Welcome Indoor Security Camera is known for its amazing artificial intelligence capabilities like facial recognition and pet detection. Shop Amazon Doesn't expireCanary All In One Canary All In One Canary All In One The Canary All In One is an indoor camera with a built in siren and environmental monitoring for your air's quality, humidity, and temperature. Shop Amazon Doesn't expireTend Secure Lynx IndoorTend Secure Lynx Indoor CameraTend Secure Lynx IndoorThe Tend Lynx is the most affordable option that we’ve seen for artificial intelligence. I have to be honest: at less than 60 dollars, I’m initially a little skeptical of the Lynx’s abilities. Sure, it’s got 1080p HD and two way audio. But can it get the job done when it comes to artificial intelligence?Surprisingly, this inexpensive little camera has facial recognition technology.