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piatkow - 11:06 am on Jan 17, 2008 (gmt 0)
UK codes themselves were designed for visual identification not computers with variable lengths and differing alpha/numeric squences.
Postcodes have only started seriously hitting public awareness in the UK with the general adoption of internet mapping services and the advent of satnav. All major mapping systems can be accessed by postcode and people now see value in knowing their own, and other people's codes.