They put passwords on their email and their social media accounts, they put locks on their bedroom and bathroom doors, all steps designed to prevent other people from entering what they consider their private realm and knowing what it is that they don't want other people to know.
Usam senhas em suas contas de e-mail e de redes sociais, usam fechaduras nas portas de seus quartos e banheiros, tudo para evitar que outras pessoas entrem naquilo que consideram seu espaço e vejam aquilo que elas não querem que os outros vejam.