What is the advantage of Google forcing me to keep me cellphone on, working and with me at all times? It just seems like this will prevent me from using my account some time in the future when I don't have my phone and I'll want to login. It's a huge drawback of the authentication relying on the cellphone for sending and checking verification codes. Why must I now have me phone to keep secure?
Google-account – I don’t understand Google’s 2-way authentication
authenticationgoogle-account
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Best Answer
The point being if your password is stolen/compromised, there's an additional step required before it can be accessed by the attacker.
You have a misconception that your phone is a must - no, it's not. It's not a must to have your cellphone with you all the time. Google offers 10, 1-time backup codes, which can be regenerated, that you can refer to enter the codes if you don't have your cellphone.
Again, you don't have to. It's for additional safety. By all means, don't use 2-factor authentication. Just don't come crying & blaming Google for not offering more stringent security mechanisms if your account gets compromised