Wireless sensors are nowadays engaged in almost every human endeavour and has made live more convenient and conducive. Human Computer interaction (HCI), which is about communication between human user and computer system or devices is a field of computer science that is gaining a lot of recognition in the improvement of human abilities. The communication between a person or user and the computer may involve certain device, medium or channel that has to be configured or programmed in a way that will facilitate an efficient interaction. Wireless sensors in HCI enhances and improves the way of life and the interaction in a wide variety of domains Therefore, it is important to know the specifications of these sensors and how they are being used in order to create human computer interfaces, which tackle complex tasks. This paper comprehensively carried out an overview of wireless sensors and HCI, security requirements and challenges of wireless sensors and how wireless sensors interrelate with HCI to improve human abilities in their daily activities. Finally, a brief discussion on the future of sensors in HCI is presented.