US Patent 11995201 Headphones with timing capability and enhanced security

An audio device, such as a headphone, can create, maintain and use secure data. The secure data can include an amount of time that the user has used the audio device and/or an amount of time allocated to the user. When the amount of time the user has used the audio device exceeds the amount of time allocated to the user, the audio device can stop emitting the audio. The secure data can also include a hearing profile of the user, which can uniquely identify the user. The secure data associated with the headphone can be encrypted to prevent tampering.