Door verification system comprised of near field communication (NFC) technology-enabled readers, quick response two dimensional data code scanners, data processing scanners, near field communication (NFC) tags and quick response two dimensional data code tags, that allows door owners and delivery personnel to verify address accuracy of deliveries left at doors by scanning software applications via tags affixed to doors

Air filtering installations; Air filters for industrial installations; Air filters for domestic use; Filters and filtering devices for filtering air that passes around doors

Air filtering installations; air filters for industrial installations; air filters for domestic use; filters and filtering devices for filtering air that passes around doors