Smart scales are advanced weighing devices that not only measure body weight but also provide additional health metrics. They often connect to smartphones or tablets via Bluetooth or Wi-Fi, allowing users to track their weight and other data over time. Many smart scales can measure body fat percentage, muscle mass, and water weight, offering a more comprehensive view of overall health. These scales typically use bioelectrical impedance analysis (BIA) to gather information about body composition. Users can access their data through dedicated apps, which may also integrate with other health platforms like Apple Health or Google Fit, making it easier to monitor fitness goals and progress.