International Journal of Wireless and Ad Hoc Communication IJWAC 2692-4056 10.54216/IJWAC https://www.americaspg.com/journals/show/319 2019 2019 Department of Computer Applications, Alagappa University, Karaikudi, India K. Shankar Generally, in smart cities, a group of sensing devices, cameras, data centers will exist that enables the civilian administrators to offer needed services in a rapid and efficient way. The effective usage of advanced technologies assists to the creation of intelligent transportation, smart healthcare, smart buildings, and so on. In case of smart building, holds the nature of gathering rainwater for future system, smart control, the probable enhancements allowed by the sensing technologies is high. The ubiquitous sensing offers various limitations which are technical or social in nature. In this chapter, an explanation of the different concepts involved to the topic of sensing in smart cities is provided. This chapter comprises a brief history, sensing platform, sensing technologies, challenges and its applications in a broader view. At the end of this chapter, it will enable the readers to clearly understand the concept of advanced sensing technologies in smart cities. 2020 2020 05 15 10.54216/IJWAC.010101 https://www.americaspg.com/articleinfo/20/show/319