What is a Smart Ring and how exactly does it work?

tech.hindustantimes.com:

In the 90s, the future of technology was assumed to be large machines that could do complicated tasks instantly. And the bigger the task, the larger the machine. But in 2023, we see that technology leans towards a smaller and minimal form factor that does all the tasks but doesn't have to be a distraction when not in use. This is why wearables have come up in a big way. Smartwatches, virtual reality glasses, augmented reality devices, and activity trackers are some of the examples of mainstream wearable products. But there is a new tech product in town — smart ring — that is quickly gaining popularity.

Smart rings first came to the foray in 2013 when the British tech firm McLear launched the first such device. These devices, as the name suggests, have a form factor of a traditional ring band and are equipped with advanced motors, chipset, and other relevant components such as NFC, proximity sensors, motion sensors, and more. In effect, these are ring-shaped computers that can do a bunch of tasks wirelessly and connect with your laptop and smartphone.

Smart rings are mainly used as an activity tracker and health monitor, similar to a smartwatch. These are ideal for people who do not just want a device to monitor their well-being and do not care about ecosystem features. It acts as a technology that is meant to work in the background.

However, recently we have seen another use-case for smart rings and that is controlling other smart devices, including a phone and a laptop. These use gesture control to operate different devices in your smart home, pick or reject calls, scroll through a laptop screen, and more.

To break it down further, imagine coming back home and turning on the lights and the fans with one swipe of hands, then