I've been idly researching alternative smartphones. It's a complete waste of time, for a number of reasons, but I'm curious, so it happens. A common design I'm seeing is a fingerprint reader built into the side of the phone, usually as part of the wake button. Every reviewer loves it, "Look how my thumb just naturally rests on the reader when I pick it up!" Their *right* thumb. I rarely pick up my phone with my right hand. My phone lives in my left front pocket, so I pick it up with my left hand. Anyone know how well these setups work left-handed? How naturally does a left index or middle finger reach these readers? How well do the readers register them?