WE talk of identity cards. For as long as I can remember, a mysterious set of numbers has appeared on much of my incoming mail.

Two years ago my circumstances altered and, almost immediately, I noticed the numbers had changed.

I have also received birthday greetings on the right day, and this from junk mail.

Who says Big Brother doesn't exist?

Anne Chelton,

Foss Islands Road, York.

Updated: 09:45 Friday, January 07, 2005