Do anyone know to validating rule for checking the Hong Kong Identity Card no

Do anyone know to validating rule for checking the Hong Kong Identity Card
no, i.e. checking the input check digit is right or not

Thanks

The only thing I can quickly find :
http://www.xml.gov.hk/download/common_schema.htm

But the HK Immigration Department would be the ones to ask.
http://www.immd.gov.hk/ehtml/contactus.htm

NickHK

"new.microsoft.com" <[email protected]> wrote in message
news:[email protected]...
> Do anyone know to validating rule for checking the Hong Kong Identity Card
> no, i.e. checking the input check digit is right or not
>
> Thanks
>
>