At risk to himself, Eisenstein managed to save Meyerhold's papers and notes and hide them in the wall of his own dacha.

ECONOMIST: Film��s great might-have-been

Patented Track Zero to hide extra tracks of music, liner notes on CDs and DVDs.

FORBES: Proving their net worth

Out of all the respondents who said they "hide" passwords to websites and apps in the Notes app on their phone, 62% were men.

CNN: Three of 10 smartphone owners don't use passwords