What is the standardized size of fingerprint cards?

The standardized size of fingerprint cards is 8-by-8 inches, which is significant for a couple of reasons. First, this size provides enough surface area to accommodate the entire fingerprint patterns from all ten fingers as well as necessary spaces for personal identification data. The dimensions ensure that the prints can be taken clearly and legibly, which is crucial for their use in various identification and forensic processes.

This standardization helps maintain consistency across different law enforcement agencies and facilitates the comparison and sharing of fingerprint records. Using a standardized card size increases the efficiency of processing and matching fingerprint data in databases.

The other sizes mentioned do not meet the typical requirements for capturing and documenting fingerprints effectively, and therefore they are not utilized in practice.