[brink]

It sounds like he's saying that the key is hashed offline to check for validity, and doesn't actually verify it via server.

[kenarsa]

Yes, the board does not have a connectivity chip of any sort [1]. Even if one really wants to there is no way to connect to anything from this board.

[1] https://www.st.com/en/evaluation-tools/stm32f4discovery.html