Oops, totally a typo, thanks for catching it! To be precise, Tidbyt can connect to networks with WEP, WPA-PSK or WPA2-PSK. So no, guest wifi isn’t supported and neither is RADIUS. We can probably add support for guest wifi without too much trouble (it just hasn’t been something that folks have requested up to now).
Also, good call on the MAC address. We don’t show that right now but can add something in the app to show it to you during the setup process.