In June 2006, New Zealand introduced a new postcode system, which, unlike the previous system, applies to all items of mail, from June 2008. New Zealand Post did not require individual items of mail to include the postcode in the address, as optical character recognition (OCR) enabled automated sorting machines to scan entire addresses, rather than just post codes, as was the case with older machines. Until the early 1990s, all mail was sorted manually. In October 2008, New Zealand Post launched a 'remember your postcode' campaign, offering a NZ$10,000 prize for remembering a postcode.