Google 2-step verification will give an additional star to your google account security. Because whenever you login into your google account, it need a code that has sended to your mobile. Google gives you two option-
one is whenever you logging into your google account you have to enter code(which has sended to your mail)
Another is Once you enter code, there is an option to Remember that computer for 30 days.
2.Click on EDIT to setup 2-step verification
3.Click setup 2-step verification to enable More security level to your google account
4.Choose Your mode of Verification
5.Give your mobile number, they will send code to your mobile and you have to verify by providing that code
6.If you choose “Remember this computer for 30 days” you have to give secret code for 30 days once.
You have to give code, every time you log into your google account
7.Then Turn ON step-2 verification
Disadvantage of 2-step verification in google is it doesn’t allows gtalk(Messenger)
Other search terms:
Google security options
How to enable google security option
How to enable 2-step verification
Disadvantage of 2-step verification in google account