When may you need to unlock your phone or give your password to the officer during a traffic stop?

• Always
• If you're on parole
  Explanation:

  "During a law enforcement stop, you also have the right to deny a request to “unlock” a cellular phone or provide a password to it. However, under some circumstances — such as if you are on parole — you may have to give permission in response to such requests."
• Never
• Officers can't ask for it