[masraum]

I've ready several places about using biometric spoon safes. Lots of "if you're stressed will you be able to get the thing open?" and I think that's a valid question.
Having something similar required to use a spoon would potentially be similar. And that's not even talking about malfunctions.

Many years ago, I was working the cash register at a FLAPS when I guy came in to rob the place. It didn't really "click" for me at first, and the adrenalin didn't really kick in until after the guy was gone. But when it finally did click that the guy had a gun and wanted the cash. It took me about 3-5 times to get the register open. Normally, you'd hit < no sale > to open the drawer without ringing something up. But I'd started ringing a customer up, so to open the drawer once a sale had been started < no sale > wouldn't work. You had to hit < cash tendered >. I'd probably opened that drawer or other drawers like it 5000-10000 times, but after about the 3rd time hitting < no sale > I had to stop and think for a split-second about why that wasn't working.

something biometric may be easier, but at the same time, I know that the various phones/devices that I've had that had either fingerprint or face recognition have all been finicky at times.

If you are certain that you are going to be completely calm under that stress/pressure, then you're golden. But I don't think most folks in that situation are going to be.