Global Card ME

  There are four primary types of fingerprint scanners: Optical Scanners: How they work: Use a light source (LED) and a camera to capture an image of the fingerprint's ridges and valleys. Pros: Relatively inexpensive and easy to manufacture. Cons: Can be susceptible to dirt, moisture, and spoofing attempts using fake fingerprints made from materials like gelatin or Play-Doh. Capacitive Scanners: How they work: Measure the changes in electrical capacitance caused by the ridges and valleys of a finger placed on a sensor. Pros: More resistant to dirt and moisture than optical scanners, and generally more accurate. Cons: Can be more expensive to produce. Ultrasonic Scanners: How they work: Emit high-frequency sound waves that penetrate the skin's surface and map the fingerprint's 3D structure. Pros: Highly accurate and resistant to spoofing attempts. Cons: More expensive and complex to manufacture. Thermal Scanners: How they work: Detect the temperature differe...