Rather than hit the wrong key I now use a keyboard with a keyguard on. The keyboard is cordless and supplied FOC by NWAT (North west Assistive Technologies). It connects by Bluetooth and the keys are bigger than usual. Keyboards with keyguards are available separately without going through your local NWAT, but I insisted on a cordless keyboard which they did not have access to at the time. It is made by Clevy, but Logitech also market them. I use rechargeable batteries.
Unfortunately this keyboard has not room for number keypad nor Function keys. So I use on screen keyboard for F keys.
HTH
Anyone else use a keyguard?