This is an official USPS service available to anyone willing to attach their address and "a statement guaranteeing payment of postage due on delivery" to their keys! Which is neat but kind of awkward if that's also the address of the door the keys open.
alt Hacker News
This is an official USPS service available to anyone willing to attach their address and "a statement guaranteeing payment of postage due on delivery" to their keys! Which is neat but kind of awkward if that's also the address of the door the keys open.
(per section 1.6 of USPS DMM 133 at https://pe.usps.com/text/dmm300/133.htm)