I mean, this is one of the few cases where you actually can reasonably say that you might not have to give a damn about GDPR. Assuming this is in the US, there's a high chance that no EU citizen lives in that building, and thus GDPR doesn't apply.
(Yes, I know this didn't actually happen)
Pretty sure most people here are talking about the usage side of things. If we were to go by effort to implement the connector, let's just go back to serial ports