[Tabular-Iceberg]

It would still remove plausible deniability. The trucker would not be able to blame anyone else for entering the wrong data in the system.

Another advantage is that you immediately see if an entry in the ledger has been dropped due to a network or other technical error, which can be a problem if you’re running a complex state machine on the data. I once helped a company build an IoT product where that was a problem. I pitched the idea but got absolutely no traction. I think the mistake I made was not calling it a blockchain, but just said I wanted to include hashes in the messages, so it didn’t sound sexy enough. I don’t like blockchain hype either, I didn’t care about being public, distributed, having proof of work or consensus, I just wanted to know if and when a message had been dropped, which is apparently too much to ask.

Also I think the vendor of the actual device didn’t understand what message authentication was, so they wouldn’t have been able to make it happen on their end. Their idea of security was just encrypting the data, but making no effort to ensure who it came from. I also think they wanted to use DES, which had already been broken for a few years at that point.