A system is herein provided for enabling optical transmission of data between a sensor and a smart device, including a computing device running testing related code in a materials testing Application, wherein the device has a screen and a camera in proximity to the screen； a materials testing adaptor including a light source and a light receiver, wherein the adaptor is adapted to be placed at least partially over the computer device screen, and at least partially over the computer device camera； wherein the computer device communicates data optically to the testing adaptor using at least a part of the screen, and the testing adaptor communicates data optically to the computer device using the light source； and wherein the computer device receives data optically from the testing adaptor using the camera, and the testing adaptor receives data optically from the computer device using the light receiver.
