Google 2FA login tutorial

Don't know card code format can look at product name, write has card code delivery format.

First open the card code you purchased,

Google Gmail login tutorial steps:

1: Account password login Gmail

2 During login, other verification methods are required; select "Authenticator verification" 

3 copy 2FA go
http://2fa.show/Generate verification code

4 return to Google input verification code can log in successfully!