A methodology to track patient usage of an autoinjector (AI) device, and to an external or electronic adaptor (eAdaptor) adapted to be used with the AI are disclosed. The eAdaptor contains sensors (including but not limited to a temperature sensor, a sound sensor, a vibration sensor and a magnetic sensor system), a display, a microprocessor, a real time clock, and communication systems that enables the eAdaptor to capture and confirm autoinjector (AI) use, as well as injection information, and transmit such information wirelessly to a smart phone or any other data receiving system or device. Also disclosed are an internal logic to operate the eAdaptor and a smart device APP that pairs with the internal logic to guide the patients with graphical user interface (GUI) displays on the smart device.
