Abstract: A computerized eyewear retrofit kit for use with an eyewear frame comprises an elongated body having a first end comprising a first end surface and a connector that is configured to pivotally couple to an eyewear frame, and a second end configured to rest on an ear of a wearer wearing the eyewear frame. At least one processor is mounted in the elongated body and is coupled to a rechargeable power source mounted in the elongated body. At least one sensor is coupled to the elongated body and operatively coupled to the at least one processor. A charging port is formed in the elongated body first end surface that is configured to receive a charging cable, wherein when the computerized temple is coupled to an eyewear frame using the connector and the elongated body is substantially perpendicular to a rear surface of the eyewear frame, the charging port is hidden.