Does the Human Rights Act imply to everyone internationally or just in the UK?

What is an Identity Card in terms of the Law and in the current affairs?

Many governmental units have enacted a Human Rights Act. However, each of these applies to only one country or state.

http://en.wikipedia.org/wiki/Human_Rights_Act

Identity Card?

https://www.gov.uk/identity-cards-and-new-identity-and-passport-service-suppliers