I've had my iPhone 6 (my first phone with Touch ID) for over two weeks now, and I absolutely love it. Touch ID, on the other hand, has been getting progressively worse. Over the past week or so, it has gone through phases where it will recognize my thumbs almost instantly, then a few hours later it won't recognize either of them no matter how many times I try. Hands washed, not washed, doesn't matter. I have a fingerprint stored for each thumb. During a period of consistent failure I attempted to add one more print for each thumb, thinking that it would help. No can do- it gives me an error message saying that it couldn't read my thumb. Why could this be happening? I know that Touch ID doesn't like excessively dry, greasy, or sweaty hands, but my hands are rarely any of those things because I wash them frequently. Maybe that's the issue? I know that attempting to use Touch ID right after washing your hands can lead to issues, but I experience problems even 10-20 minutes after washing my hands, touching nothing but my keyboard or phone.