Abstract: A method performed by a first sensor device registered with a processing node via a network comprises steps of: i. detecting a trigger event, ii. broadcasting a signal to a second sensor device and establishing a direct connection between the first sensor device and the second sensor device, iii. transferring identity information and connection information to the second sensor device via the direct connection, the former identifying the first sensor device to the processing node, the latter being used by the first sensor device to connect to the processing node, and iv. receiving confirmation that the second sensor device has been registered with the processing node as a replacement for the first sensor device and removing the connection information from the first sensor device.

Abstract: A method performed by a processing node (10), comprising the steps of: i. obtaining (11), from at least one communication device (100), audio data (12) associated with a sound and storing (13) the audio data (12) in the processing node (10), ii. Obtaining (15) an event designation (16) associated with the sound and storing (17) the event designation (16) in the processing node (10), iii. determining (19) a model (20) which associates the audio data (12) with the event designation (16) and storing the model (21), and iv. Providing (23) the model (20) to the communication device (100). A method performed by the communication device (100), as well as a processing node (10), a communication device (100), a system (1000) and computer programs for performing the methods are also described.

Abstract: A method performed by a processing node (10), comprising the steps of: i. obtaining (11), from at least one communication device (100), audio data (12) associated with a sound and storing (13) the audio data (12) in the processing node (10), ii. Obtaining (15) an event designation (16) associated with the sound and storing (17) the event designation (16) in the processing node (10), iii. determining (19) a model (20) which associates the audio data (12) with the event designation (16) and storing the model (21), and iv. Providing (23) the model (20) to the communication device (100). A method performed by the communication device (100), as well as a processing node (10), a communication device (100), a system (1000) and computer programs for performing the methods are also described.