Re: security chip???
It is a secret. The Royal Mint's explanatory web pages and video say it is excellent, but does not give a word of detail. So if you get an ISIS coin, you can tell it is genuine because ... err ... erm ... well you cannot tell it is genuine because all the new security features are secret. I assume the security features are like the emperor's new clothes - if you cannot see them you are not fit for your job.