The objective of deploying a wireless sensor network is to collect data about the environment in which it will be utilised and then to transmit that data to a distant sink where it will be used to estimate or reconstruct the environment or event. In order for the centralised sink to be able to accurately reconstruct or estimate the event and take the necessary actions on time, the wireless sensor and actuator network must be able to guarantee delivery of a sufficient amount of the information gathered by the deployed sensor nodes in a time-bound and coherent manner. In addition to the above-mentioned fundamental problem, reliability also refers to the network's capacity to tolerate defects up to a certain point without compromising performance. This chapter introduces a brand-new, dependable data acquisition technique that makes use of wireless sensor and actuator networks.