Although biometric technologies offer a high level of authentication for individuals by identifying them on the basis of their behavioral and physiological characteristics, there are many issues with the technology.
Beyond legal and cost issues in creating, saving / guarding, using, and transferring biometric credentials, there are other problems as well. Biometric methods false negative and false positive errors depend on particular implementations and ought to be thorough tested in security stringent domains.
For instance, methods utilizing personal bio motoric characteristics of a hand keeping mouse movements have to be supported by detailed information on false negative and false positive security errors data variations depending on the number of humans in the tested samples, spectrums of users ages, gender, level of physiological stress, and alike.
Some of biometric credentials can be copied (like a fingerprint), or stolen (like sound bytes) by bad actors not necessarily from the servers/storages, but directly from users.
Many users have religious and privacy concerns in using biometric traits for identification and verification purposes on a massive mandatory basis. Personally Identifiable Information (PII) policies and laws are different in many countries, and PII is being reconsidered as a very complex and important issue in various domains.
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