May I suggest that the Heritage Action metal detecting counter plays a sound when the counter changes.
Either
1. A cash register ring
0r
2. A lavatory flushing
depending on the viewpoint of the user?
[Hey keymar ? Please cool it on the Enter key. Just type it in with Enter for paras. I want to read your stuff but sometimes it's hard.]
[Hey goffik ? You are not being constructive. Constructive comments only please (like mine above) and no hate. Nigel can look after himself.]