Modern body fat analyzers come in various forms, including handheld devices, scales with built-in analyzers, and more advanced medical-grade equipment. These devices typically use bioelectrical impedance analysis (BIA) or dual-energy X-ray absorptiometry (DXA) technology to measure body fat. BIA involves sending a low-level electrical current through the body and measuring its resistance, while DXA uses X-rays to differentiate between fat, muscle, and bone.body fat analyzer