摘要：
Package-receiving-lockers (PRLs) may have a collapsible-locker portion and door-attachment structure. PRLs may exist in a substantially collapsed configuration storing the given PRL or otherwise minimizing a footprint the given PRL; and these PRLs may exist in a substantially deployed (expanded) configuration acting as a secure object storage location. Regardless configuration (deployed or collapsed), PRLs may be removably attached to side hinged- doors with the door attachment- structure, in such a way so as not to impair operation the given door. The PRLs may have various electronics facilitating access (e.g., locking and unlocking the collapsible-locker), delivery confirmation, and mitigating theft. These electronics, along with specialized software, may allow an intended recipient (e.g., a buyer), a shipper/delivery person (or shipping/ deliver robot), and/or a seller/vendor to access the PRL in a controlled and documented manner. At least some of these electronics may be in wireless communications with other electronic devices.