Abstract: A method for facilitating secure communication between a user device and a network device. Encrypted data from a user device is received at the network device. The encrypted data is encrypted based on first physiological data captured by a first sensor of the user device. The first physiological data is representative of a physiological characteristic of a user of the user device. A second sensor of the network device captures second physiological data representative of the physiological characteristic of the user. A common key for encrypting further data transferred between the user device and the network device is determined, based on the encrypted data and the second physiological data. Further aspects relate to other methods for facilitating secure communication between a user and network device, a network, and a method of operating a network.

Abstract: A method of configuring a user device. The method includes sending, from the user device to a node of a distributed ledger network (DLN), the node configured to store a distributed ledger of the DLN, a request for characteristic data indicative of a characteristic associated with a service provider, receiving, at the user device, a response from the node of the DLN in response to the request, and configuring a functionality of the user device accessible to the service provider, based at least in part on the response from the node of the DLN. Further aspects relate to a data processing system, a network, and a method of operating a network.