You are overthinking this. The solution to your problem is purchasing a phone with facial recognition. With facial recognition, your phone will unlock independently of any problems with your hands.Thanks for the info all.
I like the idea of an easy unlock, but honestly when my security screen was only a simple swipe, i turned it off as it was annoying to have to swipe just to fast forward the song that didn't suit my mood.
I don't have a sneaky significant other who feels completely entitled to view everything on my phone, Like all my married friends.
My desire for security mostly would be to deprive a potential thief of my phone, the use of my phone.
If the sorry state of my fingerprint would keep me from being able to unlock the phone, I am glad there are likely other options for doing so.
Honesty my s4 Mini was all that I ever needed, and I am PO'd that I have to 'upgrade' and learn a new phone and transfer my contacts and music.
Am also not thrilled about a huge phone that wont easily fit in a shirt's chest pocket.
But whats done is done, and perhaps in time I can convince myself I am glad to have a lower end 'new'phone