Alan Turing helped design a sophisticated electromechanical machine to break the German Enigma code, but he also designed a chess-playing machine using only relays and other basic components, decades before digital computers were widely available.
elaborate
Edward Snowden's disclosures were initially leaked to journalists Glenn Greenwald and Laura Poitras through a secure method involving flash drives and encrypted communications.
elaborate
Harriet Tubman was also a skilled herbalist and used her knowledge of plants for medicine and to treat illnesses on the Underground Railroad.
elaborate