With the Live Logging license for the MFD15, your smartphone or laptop becomes a data logger. As soon as you have activated the license, you can use the MFD15 to log all sensors active on the display on your WiFI-connected device (smartphone or laptop) and save the log for later analysis. Internal logging on the MFD15 without a connected WiFi device is not possible. When you have placed your order: 1. Send the serial number of the device to be used to info@speeding.nu (It shows when starting up the device.) 2. Add your order number 3. We will get back to you with information asap.