Abstract: A suitable diffusion nozzle (20) for an ultrasounds probe using water as coupling agent between a piece under inspection and an acoustic transductor (13) such that the water is driven towards the surface of the material through a propulsion channel (21) surrounded by a plurality of diffusion channels (23) through which air is injected under pressure, forming an insulating screen capable of repelling the drops of water generated on the jet of water striking the surface of the material.

Abstract: A method of generating a password for use by an end-user device (UE) (101) to access a remote server (103) comprises sending a request for access from the UE to the remote server, and sending to an authentication node (105) in the UE's home network (104) details of the request for access and the identity of the remote server. A HTTP Digest challenge is generated at the authentication node or the remote server using an algorithm capable of generating end-user passwords. The challenge includes details of the identity of the remote server and the identity of the UE. A password is generated and stored at the UE (101) based on the HTTP Digest challenge, the password being associated with the identity of the remote server (103) and the identity of the UE (101).