Fig. 6

Comparison of Biological Physically Unclonable Function (Bio-PUF). Comparison of the Bio-PUF with Si-PUF, optical-PUF, and nanotech-PUF on the basis of various evaluation metrics. Bio-PUFs can potentially supersede any other state-of-the-art PUFs and emerge as a strong PUF since they offer high entropy, low cost, low power, seamless reconfigurability, non-volatility, exponential number of CRPs and are practically impossible to reverse engineer even with an exhaustive knowledge of the biological system