I don't know, but I imagine a KVM circuit isn't too complicated to make in a small enough form factor that'd fit under a palm rest. The first time I wanted thi

I don't know, but I imagine a KVM circuit isn't too complicated to make in a small enough form factor that'd fit under a palm rest. The first time I wanted this was when someone gave me a usbarmory [0]. It easily fit under my thinkpad's palmrest, but was of limited value for secure computing as the only way I could interact with it was via things like ssh / X over ssh, and I was still displaying/handling all of the unencrypted information on my relatively insecure network-connected host that runs web browsers and accesses all sorts of untrusted input like porn sites and message forums and what have you. I was able to leave my private keys on the usbarmory which is a marginal improvement, at least nobody could easily sign things as me for instance. But for reading/replying to encrypted emails, I couldn't make the usbarmory connect to my keyboard and display directly, it doesn't have pins for such things nor do I have a micro KVM switch as you mentioned. [0] https://inversepath.com/usbarmory https://inversepath.com/usbarmory