by Gibran | Jul 9, 2026 | Technology
If you read my previous article on why smartwatches use green lights (PPG technology), you already know those flashes measure your pulse. But today we are going one step further: How can a simple optical sensor know if you are on the verge of a burnout collapse or a...
by Gibran | Mar 6, 2025 | Technology
If you have ever worn a smartwatch, you have probably noticed a flashing green light on its underside. This light is not just a design detail; it is an advanced technology tool that measures your heart rate. In this post, we explain how this innovation works and why...
