A portable vein viewer is a compact, handheld device designed to help medical professionals locate veins easily and accurately, especially in challenging cases. Using near-infrared (NIR) light technology, it projects an image of veins onto the skin’s surface by detecting hemoglobin, which absorbs light differently than surrounding tissue. This creates a clear, visible map of veins in real time, aiding in precise needle insertion for blood draws, IV placement, or injections. Portable vein viewers are particularly beneficial for patients with hard-to-find veins, such as young children, the elderly, or those with certain health conditions. Lightweight, rechargeable, and easy to operate, these devices enhance patient comfort, minimize needle insertion attempts, and improve procedural efficiency in hospitals, clinics, and emergency settings.