Student or Learner
I am confused about the meaning of the third step in this list:
1 "Whenever you sign in to Google you'll enter your username and password as usual. "
2 "Then, you'll be asked for a code that will be sent to you via text, voice call, or our mobile app. "
3 "During sign in, you can tell us not to ask for a code again on that particular computer. You'll still be covered, because we'll ask for codes when you or anyone else tries to sign in to your account from other computers. "
What should "cover" mean here? Is there a dictionary definition for this usage?