The present disclosure includes methods and apparatuses comprising a processor and an external communication component coupled to the processor. The external communication component, in response to determining that an approaching entity is within a particular proximity of the external communication component, is configured to generate an external private key and an external public key, provide the external public key to a communication component of the approaching entity, receive data from the communication component of the approaching entity in response to providing the external public key to the communication component of the approaching entity, decrypt the received data using the external private key, and provide authorization to the approaching entity to transit through a limited access gate based on the decrypted received data.