A MAC Address is a unique code that is assigned to networking hardware. You may need to find out what the MAC Address is to your Motorola Atrix in order to use certain applications or connect to certain networks. Just follow these steps.
1. From a Home screen, press Menu and select Settings. Alternately, you can tap the app slider and open the Settings app.
2. Scroll all the way down to the bottom selection and touch About phone.
3. Tap Status at the top.
4. Scroll down a bit, and the Wi-Fi MAC address will be listed on the screen.
Exit the screen by pressing Home.