A wireless and communicating all-in-one biomedical device for m-health applications. In a single package the following functions are provided: - pulse oximeter - blood pressure monitor - thermometer - glucometer interface Thanks to mobile and web based applications, ZAO displays the data either just locally or sends it securely to a distant server using WiFi. Using WiFi allows a wide compatibility of the device with mobile phones, tablets and computers. The Android and iOS applications supplied with ZAO are very simple to use and embed each function in a single application.