Touch ID is so very convenient, allowing you to keep your phone secure while eliminating the need to enter your passcode every time you unlock your iPhone. And because you don't need to enter your passcode every time, you can use a longer, more secure passcode without any extra hassle, thus increasing your iPhone's security as well.
Touch ID is so convenient. Except when it isn't.
Because there are always those times when it just won't read your fingerprint, no matter what position your finger is in; and after multiple failed tries you are forced to enter a passcode to unlock the phone. If you have an extra-secure passcode, the inconvenience is multiplied.
At least, this was my experience until our CEO David Averbach showed me this cool trick that resulted in Touch ID working for me every time: