This document discusses different types of smart devices. It defines smart devices as those that connect to the internet and other devices wirelessly, can be portable, process and store data, and can perform some tasks autonomously. Examples of smart devices given include smartphones, tablets, smart watches, smart glasses, and smart wristbands. Each type of smart device is then described in more detail, outlining their general functions and properties. Both advantages like improved communication and endless applications, and disadvantages like higher costs and security issues of smart devices are mentioned.