| CPC H04W 12/069 (2021.01) [H04R 25/554 (2013.01); H04R 25/558 (2013.01); H04R 2225/55 (2013.01); H04R 2225/61 (2013.01); H04W 84/18 (2013.01)] | 21 Claims |

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1. A hearing device comprising:
a processing unit configured to compensate for hearing loss of a user of the hearing device, wherein the processing unit comprises hardware;
an interface; and
a memory unit, wherein the memory unit has stored therein: a first primary certificate comprising a first primary hearing device identifier, a second primary certificate comprising a second primary hearing device identifier, and customer data indicative of the hearing device being a customer hearing device;
wherein the processing unit is configured to:
determine if the hearing device is configured to operate as the customer hearing device based on the customer data; and
in accordance with a determination that the hearing device is configured to operate as the customer hearing device, operate the hearing device according to the second primary certificate.
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