Method of controlling access to hearing instrument services

A method of controlling client access to a hearing device, the method comprising:

• determining that a communication link is established between the hearing device and a client:
• receiving, by the hearing device and from the client by way of the communication link, a request to access a set of services of the hearing device, the request including a client authenticator of the client;
• authenticating, by the hearing device, the client based on a validation of the client authenticator;
• and
• upon successful authentication of the client by the hearing device, verifying an authorization of the client to access the set of services of the hearing device, the verifying of the authorization including:
• granting access of the client to the requested set of services only if the requested set of services is a subset of a set of services the client is authorized for,
• wherein the authentication of the client by the hearing device and the verifying of the authorization of the client to access the set of services are implemented in one mechanism or in separate mechanisms.