The document discusses various biometric authentication methods including fingerprint recognition, facial recognition, hand geometry scanning, iris scanning, retinal scanning, voice recognition, and signature verification. It provides details on how each method works and analyzes aspects like accuracy and cost. Fingerprint recognition is highlighted as the best method as it is unique to each individual and accurate while also being relatively inexpensive.

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3. Method of authentication

9. Picture 2: Visualization of iris scan and extracted "IrisCode" Picture (C) IriScan, Inc.

10. Picture 4: Hand with biometric measurements visualized Image (C) Michigan State University Picture 3: Digitized fingerprint image with the minutiae points extracted. Image (C) 1998 Idex AS

13. thank you..