It's probably good for running TOTP authentificator or some kind of crypto wallet software, especially considering the lack of internet connectivity on this dev

It's probably good for running TOTP authentificator or some kind of crypto wallet software, especially considering the lack of internet connectivity on this device, which makes it more secure for this purpose (though it may output QR codes on the screen, so actually it's kind of unidirectional data diode, rather than fully isolated device). I would install OpenBSD on such computer. Recent supply chain attacks on the dedicated crypto wallet hardware [1] indicate that we must rely on open source software if we strive to avoid low-entropy backdoors in the random number generator in such systems. The probability of a successful supply chain attack on such a gadget, given the number of user-controlled variables, is close to zero. [1] https://www.kaspersky.com/blog/fake-trezor-hardware-crypto-wallet/48155/ https://www.kaspersky.com/blog/fake-trezor-hardware-crypto-w...