I love the wireless, but I suspect wired is the only way
"XOR encryption in certain Microsoft wireless keyboards."
Oy vey ... I am not surprised.
Logitech are confusing because they have their special radio dongle which is not really Bluetooth and they ALSO have Bluetooth keyboards (Bluetooth security having its own problems which suspiciously sound as if someone was trying to keep it insecure; nah, can't be... )
Now, how hard is it to crack either of these systems??