Approach to fingerprint feature hiding based on two-dimension bar code

A new solution for the protection of fingerprint information is proposed, in which fingerprint feature information is embedded into 2D bar code to prevent fingerprint information from being attacked. The direction and frequency information of the fingerprint image is utilized to ascertain the threshold of the binarization, and PDF 417 encoding is adopted for preprocessing and selecting the feature from fingerprint image, then the result of the extraction is embedded into 2D bar. When authentication is needed, the 2D bar is read and decoded to extract the saved fingerprint feature information, and then the aim of authentication and discrimination is approached. The experiment results show that the method can enhance effectively the security of the fingerprint feature information, likewise the efficiency of identification and authentication is higher, and also it is feasible for long range secure transmission and high speed type-in, as well as online/offline authentication.