Widespread interest is being shown in a biometric system based on the well‐established approach of fingerprint identification, but avoiding both the heavy data demand and the doubtful social acceptability associated with an actual fingerprint record. The technique extracts certain key features from a fingerprint or other friction ridge skin pattern and compresses them into only 918 data bits — small enough to be written into tracks one and three of an ISO standard magnetic stripe card. It is not possible to reconstruct a fingerprint from the data.
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