Smart device
A smart device is an electronic gadget that can connect to other devices or networks. It uses wireless technologies like Bluetooth, Wi‑Fi, Zigbee, NFC, 5G, or Li‑Fi to communicate. These devices can sense information, make decisions, and act on their own to some extent.
Common types include smartphones, smart speakers, smart cars, smart thermostats, smart doorbells, smart locks, smart refrigerators, smartwatches, fitness bands, tablets, and smart TVs. There are many other smart devices as well.
Smart devices are usually built in three layers: a hardware layer that sends signals, a network layer that lets devices talk to each other, and an application layer that lets you send commands and receive results. They can be designed for a variety of forms and uses, from small single devices to large systems.
Smart homes use sensors, connected appliances, and a central control system or database to manage things like lighting, temperature, and security. The idea behind ubiquitous computing is to make technology blend into everyday life, with devices that are easy to use and that help us without needing constant attention.
Environments with smart devices can be physical spaces that are embedded with sensors and controllers, human-centered setups that focus on people and tasks, or distributed computing systems that run across many devices and locations. In short, smart devices connect, sense, and respond to make life easier and more automated.
This page was last edited on 2 February 2026, at 10:27 (CET).