Isn't it time we had something better than postcodes?

Elementary common sense says that a single character error in any reference system should never, EVER, resolve to a valid address.

We need something with a digit or two of redundancy to ensure a high probability of detecting a keying error.

Above all, we need something that's in the public domain. It's not right that a single company in what is supposed to be a competitive service has a defacto monopoly on the addressing system.