USB armory – small secure computer from WithSecure (previously F-secure)

it went to space recently https://twitter.com/WithSecure/status/1664260736254717952

https://www.withsecure.com/en/whats-new/pressroom/usb-armory...

developed entirely in-house by WithSecure Foundry and is manufactured in Italy. The schematics and layout are open to the public as well as its core software, drivers and tools.