US Patent 11443580 Method and system for access to a secured building

The present invention provides for methods and systems for accessing a secured building. The method includes retrieving information from a code associated with a carrier and an address. The code may be a barcode with encoded information. The method further includes confirming that the address is associated with the secured building and further validating the carrier as an authorized carrier by an identification of the carrier. The method further includes validating a status associated with the information to be one of: in transit; and out for delivery. Upon positive response of the status, the method further includes allowing access to the secured building. In some embodiments, prior to allowing access to the secured building, the method further includes checking that an update to the status is within 24 hours.