RAD-ID is a portable radiation classifier. No special training is required, anyone can easily measure the radiation amount on the spot with the touch of a button and identify the content (radioactive isotope). For example, it is possible to measure the radiation dose of each isotope such as cesium-137 and iodine-133. There are more than 110 types of distinguishing elements. We measure not only medical isotopes and industrial isotopes, but also nuclear elements. In addition, the Bluetooth function makes it possible to issue measurement instructions from a remote location, and the measurement data can be easily output to a PC, greatly speeding up the output work after measurement. There are four types of RAD-ID, each with a different on-board sensor.