The purpose of this design project is to further develop an interface to non-invasively monitor cerebrospinal fluid (CSF) flow in commercially available cerebral shunts. The two main components of this interface system are the internal, implanted sensor unit and the external unit. The main goal of this project is to provide an improved quality of life for patients with hydrocephalus. A smaller sensor housing unit will improve patient comfort, while the addition of a spectrophotometer will detect contaminants in the CSF and provide more information to the patient. Using Bluetooth transmission, CSF flow rate and CSF quality data will be sent to the patient’s smart device which will display real-time information and alert the patient if necessary. The wearable external unit will be redesigned for optimal patient comfort for continuous monitoring. Providing the patient with real-time data will reduce the number of unnecessary hospitalizations for hydrocephalus complications and will provide the patient with piece-of-mind that their shunt is functioning properly.