I'd like to tell you about an open source hardware pasword manager (hardware, software and firmware are all open source). It's a case study that illustrates a number of common themes about #FOSS, both good and bad.
The product is Signet. https://www.crowdsupply.com/nth-dimension/signet
There's a newer version in this line called Signet HC (high capacity).
https://www.crowdsupply.com/nth-dimension/signet-high-capacity
It all started when I was setting up a new computer and wanted to compile the software to access the passwords on the signet...