14. The dialysis system of claim 13 , wherein the indication that an authorized user is in proximity to the dialysis system is based on receiving data associated with an external tag.
14. The dialysis system of claim 13 , wherein the indication that an authorized user is in proximity to the dialysis system is based on receiving data associated with an external tag. 15. The dialysis system of claim 14 , wherein the external tag comprises an RFID tag.