Yes, if you need to allow devices to connect to your network via MAC address, Mevo has one you can add.
You can find it within the app after connecting to Mevo. Go to settings, then scroll to the bottom of the screen to find the About menu. The Mac addresses will be listed here.
If you are connecting to Ethernet via Mevo Boost, the Boost's MAC address will display here under Ethernet MAC address. Use this address to connect to your network.