!!! Overview [{$pagename}] refers to [metrics] related to human characteristics. There are two [{$pagename}] areas: * [Physiological Characteristics] * [Behavioral Characteristics] [{$pagename}]s are often used as an [Authentication Factor] and referred to as [Inherence Factors] !! [Biometric Data Challenges] There are several [Biometric Data Challenges]. !! More Information There might be more information for this subject on one of the following: [{ReferringPagesPlugin before='*' after='\n' }]