LOC8 is a postcode system developed by a couple of guys from Cork a few years ago. It is a brilliant system especialy for anyone interested in maps as you can find your location on a OS map with the code if you don't have satnav. They offered the system for free to the Irish government last year when they spoke of a postcode system but nothing happened. Last week the minister, Pat Rabbitte, announced a new postcode system. He said it would take about two years to develop and cost around three million. Figure that. Typical "jobs for the boys" bullsh*t.
It works with all newer garmin and TomTom units. It really is a very simple but effective system and will pinpoint any address to about three to five meter accruacy.
PS. I don't work for them, just love the system.