Infusion devices and fluid identification apparatuses and methods

A method for identifying a fluid for delivery to a body of a user, the method comprising:

• holding a first fluid in a reservoir;
• coupling the reservoir to a device housing having a conduit;
• coupling the device housing to an infusion device with a connector, wherein the connector comprises:
• a coupling directly connected to the reservoir to establish fluid communication from the reservoir to the conduit;
• a wall having an internal surface and an external surface, wherein the internal surface bounds the conduit;
• a transmitter element mounted on the connector;
• a receiver element mounted on the connector;
• and
• an identifier element mounted on the connector and coupled to the receiver element;
• directing flow of the first fluid through the conduit;
• transmitting an initial beam of energy from the transmitter element into contact with the first fluid;
• altering the initial beam of energy through interaction with the first fluid by absorbing, refracting and/or reflecting the beam of energy to create a first altered beam of energy, wherein the first altered beam of energy is different from the initial beam of energy;
• receiving the first altered beam of energy with the receiver element;
• and
• analyzing the first altered beam to identify the first fluid with the identifier element.