This system effectively renders stolen passwords useless, as unauthorized users would also need physical access to your mobile device or your list of backup codes. Setting Up and Using 6-Digit Codes
Google detects a login attempt from a new location or device. How to Get Your 6-Digit Code on Portable Devices 6 digit verification code gmail portable
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. This system effectively renders stolen passwords useless, as
This code is required after you enter your correct password. It acts as "something you have" (your phone) in addition to "something you know" (your password). This link or copies made by others cannot be deleted
Yet, the six-digit code endures. It works everywhere, on any phone, on any computer (via browser extensions), and does not require specialized hardware. For the foreseeable future, it remains the most second factor.