https://uxdesign.cc/why-the-confirm-password-field-must-die-and-other-ux-links-this-week-202e741b708a https://ux.stackexchange.com/questions/4767/is-a-confirm-email-address-field-still-considered-a-best-practice http://uxmovement.com/forms/why-the-confirm-password-field-must-die/