Historically, two-factor authentication is not a new concept but its use has become far more prevalent with the digital age we now live in. As recently as February 2011 Google announced two factor authentication, online for their users, followed by MSN and Yahoo.
Body worn video (BWV), also known as body cameras, is a video recording system that is typically utilized by law enforcement to record their interactions with the public or gather video evidence at crime scenes, and has been known to increase both officer and citizen accountability.
The costs of implementing body-worn cameras include not only the cost of the cameras, but also of any ancillary equipment (e.g., tablets that let officers tag data in the field), data storage and management, training, administration, and disclosure.