"Šifra tricikl" je autobiografsko delo Duška Popova avanturiste, plejboja i vanserijskog srpskog obaveštajca koji je u 2. svetskom ratu radio za britanski MI-6. Po uzoru na njega Ian Fleming je kasnije stvorio lik Džejms Bonda. 
 
"Codename Tricycle"  is the autobiographical work of Duško Popov, an adventurer, playboy and extraordinary Serbian intelligence officer who worked for the British MI-6 in World War II. Following his example, Ian Fleming later created the character of James Bond.