forces and militaries where it is used not only to gain access but also in six main essential applications. Without logical access control security systems highly confidential information would be at risk of exposure. There is a wide range of biometric security devices and software available for different levels of security needs. There are very large complex biometric systems for large networks that require absolute airtight security and there are less expensive systems for use in office buildings and smaller institutions. Notes References Andress, Jason. (2011). ″The Basics of Information Security.″ Cory Janssen, Logical Access, Techopedia, retrieved at 3:15 a.m. on August 12, 2014 findBIOMETRICS, Logical Access Control Biometrics, retrieved at 3:25 a.m. on August 12, 2014 External links RSA Intelligence Driven Security, EMC Corporation Computer access control