APPLE MAC OS (macOS Ventura and Above)

1. From the Apple menu, select System Settings.
2. In System Settings, from the View menu, select Network.
3. In the right column, click Wi-Fi.
4. Scroll to the bottom and click Advanced.
5. Wi-Fi MAC Address is the fourth item in the list, formatted as "aa:bb:cc:11:22:33". 

APPLE IOS (IPHONE, IPAD)

1. Open the Settings application.
2. From the list of setting categories, select General.
3. From the list of general settings, select About.
4. The MAC address is the value labeled Wi-Fi Address.
5. Leave the Settings application.

ANDROID

1. Open the Settings application.
2. From the list of setting categories, select About phone. (This category might be named something else, for example, About tablet.)
3. From the list of choices, select Hardware information. On some versions of Android, you may instead need to choose Status.
4. the MAC address is the value labeled Wi-Fi MAC Address.
5. Leave the Settings application.

WINDOWS 7/10

1. Click the Start button.
2. In the Run text box, type cmd.  This will open the command window.
3. At the command prompt, type ipconfig /all.
4. Copy down the "Physical Address" (aka the MAC address) from the "Ethernet adapter Wireless Network Connection" section.
5. Close the command prompt window.