To assess the percentage of all documents lost in the post across the whole of the Home Office area of business would be disproportionate to costs. However, on the loss of passports, the Identity and Passport Service despatch new passports to customers by Secure Delivery, a secure courier service provided by Secure Mail Services (SMS). In the last two years, around 720 passports have been lost, which represents 0.012 per cent. of the 6 million total deliveries in those years. SMS couriers now use handheld GPS technology to assist in deliveries and losses are expected to significantly reduce as a consequence.