Passwords help people avoid unauthorized access to their personal devices but are not without challenges, like memorability and shoulder surfing attacks. Little is known about how people with vision impairment assure their digital security in mobile contexts. We conducted an online survey to understand their strategies to remember passwords, their perceptions of authentication methods and their self-assessed ability to keep their digital information safe. We collected answers from 325 people who are blind or have low vision from 12 countries and found: most use familiar names and numbers to create memorable passwords, the majority consider fingerprint to be the most secure and accessible user authentication method and PINs the least secure user authentication method. This paper presents our survey results and provides insights for designing better authentication methods for people with vision impairment.

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Passwords help people avoid unauthorized access to their personal devices but are not without challenges, like memorability and shoulder surfing attacks. Little is known about how people with vision impairment assure their digital security in mobile contexts. We conducted an online survey with 325 people who are blind or have low vision and found they are concerned about entering passwords in public because of the risk of others observing their passwords. We also found PINs, commonly required on smartphones, are considered insecure and poorly accessible. To solve those issues, we investigated the usability of bend passwords, a recently proposed method for authentication that uses a combination of predefined bend gestures performed on a flexible device. We designed a new deformable prototype and ran a user study with 16 vision-impaired participants, finding that bend passwords are as easy to learn and memorize as PINs, but are faster to enter than PINs. BEND PASSWORDS FOR PEOPLE WITH VISION IMPAIRMENT Daniella Briotto Faustinoiii