common biometric techniques

Some common biometric techniques include:

1. Fingerprint recognition
2. Signature dynamics
3. Iris scanning
4. Retina scanning
5. Voice prints
6. Face recognition

Select one of these biometric techniques and explain the benefits and the  vulnerabilities associated with that method in 3-4 paragraphs.

Please do not copy without providing proper attribution. This paper will be evaluated through SafeAssign. 

Please write in essay format not in outline, bulleted, numbered or other list format.