With the influx of IoT devices, "Biometric Authentication" has become a prevalent technique to safeguard users' identities. Biometric methods, like fingerprint or facial recognition, offer strong user authentication.

Digital certificates in IoT devices primarily aid in device authentication. These certificates ensure that the device is genuine and authorized to access or exchange data within the network. While data storage and encryption are important, they are not the primary role of digital certificates in IoT.

In the 1980s, machines communicating their status to a computer is a clear example of Machine-to-Machine (M2M) communication. This concept laid the foundation for the development of the Internet of Things (IoT) where devices and machines can communicate with each other autonomously.

IoT devices employ encryption to ensure data integrity and confidentiality. Encryption is the process of converting data into a secure format that can only be read with the correct decryption key. Authentication, Firewall, and Latency are important in IoT, but they do not directly ensure data integrity and confidentiality as encryption does.

Data analytics in IoT not only helps in understanding the data but also in "Predicting" based on the insights. IoT data analytics uses historical and real-time data to identify patterns and trends, enabling predictions that can be valuable for decision-making and improving processes.

5G's primary benefit for IoT is low latency, which ensures quick data transmission. This is crucial for real-time applications like remote surgery and autonomous vehicles.

Smart thermostats and smart locks are examples of home automation devices. They are designed to make homes more efficient, comfortable, and secure. Smart thermostats help control the temperature of a home, while smart locks enhance security by allowing remote access control.

Data analytics tools in IoT are essential for analyzing large datasets generated by IoT devices. These tools provide stakeholders with insights into trends, patterns, and anomalies, which can be valuable for decision-making and optimization.

OTA updates are crucial for delivering bug fixes and feature enhancements remotely, ensuring that IoT devices can adapt, improve, and stay secure over time. These updates are typically delivered over the internet, allowing devices to be updated without physical access.

The low latency feature of 5G is critical for remote surgery. Low latency ensures minimal delay in data transmission, which is crucial in surgical procedures where real-time responses are essential. High bandwidth, wide coverage, and energy efficiency are also valuable but have different priorities in this scenario.