A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.

Wi-Fi signals today primarily transmit data. But these signals can also be used for other innovative purposes. For instance, one California-based team has proposed using ambient Wi-Fi signals to ...

Google came late to the smartwatch game and had a rocky start with its first Pixel Watch in late 2022. However, the company more than redeemed itself with the Pixel Watch 2, a worthy successor that ...