US Patent 11423723 Enhanced access control based on key proximity

Embodiments relate to enhanced access control features based on proximity between a portable electronic key and an electronic locking device. The portable electronic key receives first authentication information from an access administration device. Based on the portable electronic key being located within a threshold distance to the electronic locking device, the portable electronic key receives second authentication information from the access administration device. In some aspects, determining whether the key is located within the threshold distance to the electronic locking device comprises detecting a communication between the locking device and the portable electronic key. The portable electronic key may initiate an unlocking event at the electronic locking device based on the first authentication information and the second authentication information. Initiating the unlocking event comprises transmission of an access credential that causes the electronic locking device to permit access to an entry point.