IoT-Based Smart Doorbell: A Review on Technological Developments

Advancement in technology and connectivity has led to the development of the Internet of Things such that in the present era it is now being deployed into daily-use objects. The idea is to control the basic functions and features of these objects through a computing device either automatically or remotely. The class of such objects that come under the umbrella of a home of a person is called smart home devices, and one of them is the smart doorbell. Smart doorbell offers the main feature of security, remote control, and other features depending on the sensors and functionalities it packs. Security from intruders or an unknown person is the primary worry of a homeowner, and hence, smart doorbells can be a solution to ease out this worry. This paper reviews the developments in the field of IoT-based smart doorbell proposed by researchers and also discusses the results, limitations, and possible future developments.