Why this matters now
IoT is tested for its concept, its role in smart cities/Industry 4.0, the 5G enabler, and the security/privacy risks — a recurring S&T and governance crossover.
What IoT is and how it works
IoT connects devices — from home appliances to industrial machines — via sensors, actuators and networks (Wi-Fi, 5G) to the internet. They collect, transmit and act on data, often using cloud/edge computing and AI for analytics. 5G (low latency, massive device density) is a key enabler.
Applications
- Smart cities — traffic, lighting, waste, utilities;
- Agriculture — soil/weather sensors, precision farming;
- Healthcare — wearables, remote monitoring;
- Industry (IIoT) — predictive maintenance, automation;
- Homes & energy — smart meters and appliances.
India’s push and the risks
IoT underpins India’s Smart Cities Mission, digital agriculture and Industry 4.0 ambitions, boosted by cheap data and 5G rollout. Major concerns: cybersecurity (insecure devices), data privacy, interoperability/standards, and dependence on imported hardware.
UPSC angle
Know IoT (sensors + connectivity + data), the 5G/edge/AI enablers, applications (smart cities, IIoT, agriculture, health), India’s missions, and the cybersecurity/privacy risks.
Frequently asked questions
What is the Internet of Things?
A network of physical objects embedded with sensors and connectivity that collect and exchange data over the internet.
How does 5G help IoT?
5G’s low latency and ability to connect many devices densely make large-scale, real-time IoT applications possible.
What are IoT applications?
Smart cities, precision agriculture, healthcare wearables, industrial automation and smart homes/energy.
What are the risks of IoT?
Cybersecurity vulnerabilities, data privacy, lack of interoperability standards and hardware import dependence.