RECORD
Assessing Inconspicuous Smartphone Authentication for Blind People
Human-Computer Interaction · Submitted 2 Jun 2015
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Results showed the method to be usable and to support the desired inconspicuity.
The compiled record
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
As people store more personal data in their smartphones, the consequences of having it stolen or lost become an increasing concern. A typical counter-measure to avoid this risk is to set up a secret code that has to be entered to unlock the device after a period of inactivity. However, for blind users, PINs and passwords are inadequate, since entry 1) consumes a non-trivial amount of time, e.g. using screen readers, 2) is susceptible to observation, where nearby people can see or hear the secret code, and 3) might collide with social norms, e.g. disrupting personal interactions. Tap-based authentication methods have been presented and allow unlocking to be performed in a short time and support naturally occurring inconspicuous behavior (e.g. concealing the device inside a jacket) by being usable with a single hand. This paper presents a study with blind users (N = 16) where an authentication method based on tap phrases is evaluated. Results showed the method to be usable and to support the desired inconspicuity.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | As people store more personal data in their smartphones, the consequences of having it stolen or lost become an increasing concern. | background 1.00 | 0.03 | 0.02 | asserted 0.98 |
| s1 | A typical counter-measure to avoid this risk is to set up a secret code that has to be entered to unlock the device after a period of inactivity. | background 1.00 | 0.03 | 0.02 | asserted 1.00 |
| s2 | However, for blind users, PINs and passwords are inadequate, since entry 1) consumes a non-trivial amount of time, e.g. using screen readers, 2) is susceptible to observation, where nearby people can see or hear the secret code, and 3) might collide with social norms, e.g. disrupting personal interactions. | background 0.73 | 0.08 | 0.03 | asserted 0.99 |
| s3 | Tap-based authentication methods have been presented and allow unlocking to be performed in a short time and support naturally occurring inconspicuous behavior (e.g. concealing the device inside a jacket) by being usable with a single hand. | background 1.00 | 0.06 | 0.04 | asserted 1.00 |
| s4 | This paper presents a study with blind users (N = 16) where an authentication method based on tap phrases is evaluated. | contribution 0.97 | 0.94 | 0.04 | asserted 0.97 |
| s5 | Results showed the method to be usable and to support the desired inconspicuity. | result 1.00 | 0.95 | 0.89 | asserted 1.00 |
What was examined, and what was not
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The paper
Original abstract
As people store more personal data in their smartphones, the consequences of having it stolen or lost become an increasing concern. A typical counter-measure to avoid this risk is to set up a secret code that has to be entered to unlock the device after a period of inactivity. However, for blind users, PINs and passwords are inadequate, since entry 1) consumes a non-trivial amount of time, e.g. using screen readers, 2) is susceptible to observation, where nearby people can see or hear the secret code, and 3) might collide with social norms, e.g. disrupting personal interactions. Tap-based authentication methods have been presented and allow unlocking to be performed in a short time and support naturally occurring inconspicuous behavior (e.g. concealing the device inside a jacket) by being usable with a single hand. This paper presents a study with blind users (N = 16) where an authentication method based on tap phrases is evaluated. Results showed the method to be usable and to support the desired inconspicuity.
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