A patient unique identifier system is provided. An example system includes a database storing patient information; a radio-frequency identification (RFID) tag associated with a patient, the RFID tag storing an indication of an identification of the patient and encrypted biometric data captured by sensors of a wearable device worn by the patient; and an RFID reader device configured to: read the RFID tag and retrieve, based on reading the RFID tag, the indication of the identification of the patient and the encrypted biometric data without decrypting the encrypted biometric data; send the encrypted biometric data to a server to be decrypted and stored in the database; access patient information associated with stored in the database based on the retrieved indication of the identification of the patient; and provide the information associated with the patient to a user of the RFID reader device.