The line between lifestyle gadget and medical device is vanishing. From smartwatches to smart rings, Dr. Vishvaraj Rathod explores how wearable technology tracks far more than steps — and when those numbers actually matter. Learn what features are medically validated, how data integrates into patient care, and why the simplest metrics often tell the clearest story. A precise look at a multibillion-dollar industry that’s quietly reshaping clinical practice.