CNet took a sneak peak at a recent trade show of the upcoming smart doorbell offering from Nest, the same company that makes the popular Nest Thermostat. Nest, who was acquired by Google back in January 2014, also offers security cameras and a smoke/co alarm in their product offerings. They also have an upcoming home security alarm system coming out soon as well.
You can check out more on the Smart Doorbell on Nest’s Hello Doorbell Overview page.