The present disclosure is directed to a content protection system using biometric authentication. In general, a user may be authenticated using sensed biometric data prior to receiving content from a content provider. An example device may comprise a biometric identification (BI) module and a content delivery (CD) module. The CD module may cause the BI module to sense biometric data from a user of the device. Authentication data may be generated based on the biometric data. In one embodiment, the authentication data may comprise a key generated from the biometric data. The authentication data may then be sent to the content provider, and upon authentication, the content provider may deliver the content to the device. The CD module may also be able to register new users with the content provider and/or allow users to purchase content not already licensed to the user.