1. Go to the workshop and connect WiFi.
Warning: You have to connect the WiFi which you usually use GDS Mobile/KDS.
2. Go to [Setting] on tablet PC.
3. Tap [Connection].
4. Tap your Wi-Fi network.
5. Tap [Setting] on the network.
6. Tap [MAC address type].
7. Select [Randomized MAC].
8. It is complete.