Smart communications are the concept in which smart appliances and devices are integrated into an application that runs in a smart hand-held device. The residents of a smart home can have complete control over their home’s electronic gadgets using wireless communications. These technologies can help people control gadgets in the homeoffice remotely and often simultaneously, which increases convenience and reduces time spent on these tasks. However, problems can arise in the security systems associated with these smart devices; security may be compromised when there are loopholes or human mistakes. When security credentials are lost, overall security can also be lost. This is because smart technology is made up of plenty of devices that are integrated with Internet of Things (IoT) technology and the cloud. This environment can introduce many security issues, as discussed in this text. Blockchain is a promising technology that operates in a decentralized environment to protect devices and the data collected by devices from security and privacy issues by using wireless communication technology. Blockchain-enabled IoT can be used to achieve end-to-end security. Blockchain technology is already used in wireless sensorcommunication networks to estimate and predict house data and civil structures.