There will be 3 options for those that do not wish to disclose their address to the public. All three of these options will vary in price, and features. 2 of these options are available directly from the postal service whereas the last option is available through private companies. NSC requirements will require that the first of the privacy options is affordable to anyone that would need the service. This is because privacy is considered as a right, and not a privilege.
The first option is a PO Box. The only condition to this, is it will only accept postal service mail. Therefore if the shipper used a private shipping company like UPS, this will not work for the person. This is because the shipper does not have the physical address of the post office, and therefore no way to identify which post office is hosting the PO Box. For those that would need to have packages from private shippers will benefit from option 3.
Option 2 is a private address. In this case, the addressor will write the recipient name, and below their name, they will provide the NIN. This NIN will be used in a similar method to the postal code where the scanning systems will use a database to define the post office for the address. Once it receives at the delivery office, a yellow sticker will be affixed to the envelope providing the full address. Since the sender will never see this address, they will not know the location of the person they sent the letter too. This is even more private than a PO Box as a PO Box can eventually be found and looked up with the right tools. A private address affords no such option. As with a PO Box, private shippers do not have access to the addressing database for private addresses. Therefore, a physical address must be provided.
The third option is a competitor of the postal service, and that would be a private mailbox (PMB). A PMB will look a little like an apartment address, but instead of APT, the address will either be PMB (box number) or Box (box number) which will be the second line above the physical street address. Having a PMB from a postal service competitor is not considered as an essential resource, and therefore prices are determined by the service owner. In example, my PMB is $360 per year which at $30 per month, not really affordable. Such rates can likely be found in Kaldus. Postal carriers will still deliver to PMB addresses, so if a PMB is from a private shipper, you do not need to use that shipper to deliver like you would with a PO Box.