Wireless sensing is a state-of-the-art technology of acquiring information about a remote object and its characteristics without bringing into physical contact with it. Humans have various sensory systems, viz., vision, hear, and smell to observe the object from the remote in day-to-day life. The data from the surrounding can be acquired by means of acoustic waves, distribution of forces, and electromagnetic energy. The collected data can be analyzed to obtain useful information about the object and its characteristics. Swift progress in the microelectronics has resulted in faster response and accurate mode of signal detection. Keeping the technological progress in mind, this article discusses the fundamentals aspects and reviews the state of the artwork on wireless detection technology. © 2019, Springer Nature Singapore Pte Ltd.