Biometric security devices can be used in conjunction with other security measures to provide additional layers of protection. For example, a building might use a combination of biometric authentication and traditional keycard access control systems to ensure that only authorized personnel can access certain areas. Biometric authentication could also be combined with security cameras to provide an additional layer of surveillance and monitoring. In addition, biometric data can be used for identity verification in financial transactions, online banking, and other sensitive transactions. Overall, biometric security can provide enhanced security when used in conjunction with other measures.