It seems like the benefits are having the device lock/wipe itself after a set amount of attempts in case of a brute force attack and not having to run software to decrypt the drive on the device you plug it into.
I included a picture of the IronKey Keypad 200 but that's just because it's the first result that came up when I was looking for an example. There seem to be a few other manufacturers and models out there and they probably have different features.
I am curious what do you think of them? Do you think they are useful? Do you find it more a novelty?
It was an ExplainingComputers video titled Very Useful Small Computing Things that made me think of them.
Looks find to me, depending on your use case, everything would have a use case
Many people mention airport red flags and checks, for me I never had any issues with the airport stuff, except one time in China when I had a full case of wires, really 10kg of wires, and they just asked me me to open and show, np