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

[new.microsoft.com]

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

 

[NickHK]

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