This document summarizes a research paper on M-Pass, a proposed user authentication protocol that aims to prevent password stealing and reuse attacks. M-Pass leverages cell phones and SMS to authenticate users on untrusted devices without requiring them to enter passwords. It involves a registration phase where users register with a website and encrypt a password with their phone number. For login, users provide their username and long-term phone password, and the website generates a one-time password using a secret credential. The protocol aims to eliminate the need to remember multiple passwords by using the phone for authentication across websites. Evaluation shows registration and login times average around 4 and 3.5 minutes respectively. The researchers conclude M-Pass can prevent password stealing and reuse