Hearing device system, devices and method of creating a trusted bond between a hearing device and a user accessory device

A data processing system comprising:

• a processing unit;
• and
• a communication interface;
• wherein the processing unit is configured to transmit, via the communication interface, a key to a hearing device;
• wherein the processing unit is configured to create authentication data comprising the key in encrypted form;
• and
• wherein the processing unit is configured to provide a representation of the authentication data in a format readable by a user accessory device.

A user accessory device comprising:

• a processing unit;
• and
• a communication interface;
• wherein the processing unit is configured to obtain authentication data created by a data processing system, the authentication data comprising an encrypted key;
• wherein the processing unit is configured to receive, via the communication interface, information from a hearing device;
• wherein the processing unit is configured to decrypt the encrypted key comprised in the authentication data based on at least the received information;
• and
• wherein the processing unit is configured to establish, via the communication interface, communication with the hearing device based on the decrypted key.

A computer program product having a set of instructions, which when executed by a processing unit of a data processing system, will cause the data processing system to perform a method, the method comprising:

• transmitting, via a communication interface of the data processing system, a key to a hearing device;
• creating authentication data comprising the key in encrypted form;
• and
• providing a representation of the authentication data in a format readable by a user accessory device.

A computer program product having a non-transitory medium storing a set of instructions, which when executed by a processing unit of a user accessory device, will cause the user accessory device to perform a method, the method comprising:

• obtaining authentication data created by a data processing system, the authentication data comprising an encrypted key;
• receiving, via a communication interface of the user accessory device, information from a hearing device;
• decrypting the encrypted key comprised in the authentication data based on at least the received information;
• and
• establishing, via the communications interface, communication with the hearing device based on the key.