ɪf ðɪ ˈɛntɚ kˈiː ɪz pɹˈɛst æt ðə pˈæswɜːd pɹˈɑːmpt, ɪt wɪl tˈɜːn ˈɛkoʊ ˈɔn, sˌoʊ wʌt ɪz bˌiːɪŋ tˈaɪpd kæn biː sˈiːn wɛn ˈɛntɚɹɪŋ ɐn ʌnfəmˈɪlɪɹ pˈæswɜːd fɹʌm ɐ pɹˈɪntaʊt.
If the Enter key  is pressed at the password prompt, it will turn echo on, so what is being typed can be seen when entering an unfamiliar password from a printout.