Abstract: Method and system for a medication adherence tracking device of a medication container. The adherence tracking device includes a motion sensor detecting at least a partial rotation of a removable cap of a medication container, the motion sensor being disposed at least partly on the removable cap; and a transmitter transmitting adherence data that indicates a time of removal of the cap from the medication container in accordance with the motion sensor.

Abstract: A medication adherence tracking device is configured for being attached to a cap of a conventional medication container. The tracking device includes an adhesive layer for attaching the device to the cap. The device also includes an infrared proximity sensor for detecting an amount of light that is reflected by a wall surface and/or a bottom surface of the medication container. A transmitter of the tracking device transmits adherence data to an external computing device, wherein the adherence data comprises a timestamp identifying when the cap was removed from the container. Reflected light data obtained by the sensor is sent to a processor, and the processor uses the data to determine whether the cap has been removed from the container. When the cap is removed from the container, the processor generates the timestamp.