# Overview
To use it, you need a cloud service contract and a compatible device.
■ Features
--There are physical condition tracking mode and environment tracking mode (switching is done automatically according to the ID provided by the cloud service).
――In physical condition tracking mode, you can visualize your physical condition by linking with this application compatible device that tracks your physical condition.
--In the environment tracking mode, you can visualize the environment information of each point from the dedicated web application of the cloud service by connecting to the device compatible with this application.