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Slide 2 A Study on Assistive Methods for the Visually Impaired BIOMETRIC ACCESSIBILITY Brian Stanton Slide 3 Questions: How will the visually impaired use a fingerprint scanner? Location Where is the scanner? Placement Where to place the hand? Duration How long is the hand left in place? Slide 4 Interviews 10 visually disabled interviewees All had experience with fingerprinting Some had experience with electronic fingerprinting In both cases their hands were manipulated by the operator Suggested verbal and/or audible cues Suggested tactile guides Slide 5 Location Locator tones are used to locate crosswalk activators Slide 6 Placement Tactile Guides Determined Placement Determined Size Cutout Opening in Textured Overlay Slide 7 Duration Tone Beeping different from locator tones Haptic Mild vibration Start and End Indicators Constant throughout scan Slide 8 Scanner Mockup Clear Acrylic Case Speaker Vibration Device Texture Overlay Slide 9 Scanner Mockup Clear Acrylic Case Speaker Vibration Device Texture Overlay Slide 10 Study Procedure Participant was given instructions Placed before scanner Locator tone sounded Stopped when scanner was touched Using textured surface, participant placed hand on scanner Duration was indicated Start tone and stop vibrate Continuous tone Continuous vibration Slide 11 Results Participant numberVision Start beep End vibrate Start tone started End tone ceased Start vibration started End vibration ceased 1NoneOkUnclearOk 2NoneOkNo OkNo 3NoneOk NoOk 4NoneOkUnclearOkNoOk Start Beep End Vibrate : Mismatched cues lead to confusion Constant Tone: Wasnt sure what the ending of tone meant Constant Vibration: Correctly Indentified Slide 12 Study Procedure 2 Participant was given instructions Placed before scanner Locator tone sounded Stopped when scanner was touched Using textured surface, participant placed hand on scanner Duration was indicated Start tone and stop tone Continuous vibration Accelerating Beeping Slide 13 Results 2 Participant numberVision Start beepEnd beep Start vibrate End vibrate ceased Start beep Accelerated beep ceased 5LowOk no (gap) 6NoneOkNoOk no (gap) 8None 9 OkNoOk Ok (gap) Start Beep End Beep : Ending tone was not identified Constant Vibration: Correctly identified Accelerated Beeps: Pause before final 2 beeps lead to confusion Slide 14 Study Procedure 3 Participant was given instructions Placed before scanner Locator tone sounded Stopped when scanner was touched Using textured surface, participant placed hand on scanner Duration was indicated Start tone and stop tone Continuous vibration Accelerating Beeping-2 Slide 15 Results 3 Participant numberVision Start beep End beep Start vibrate End vibrate ceased Start beeping Accelerated beep ceased 10LowOk Ok (no gap) 11LowNo Ok Ok (no gap) 12NoneNoOk Ok (no gap) Start Beep End Beep : Tones was not identified Constant Vibration: Correctly identified Accelerated Beeps -2: Correctly identified Slide 16 Conclusions: Location All participants located scanner Tone can be used for location Placement All but one participant placed hand correctly Texture can be used for placement Duration Either tone or vibration can be used for duration. But, duration indicator must be associated with a process. Slide 17 Bigger Question If biometric devices will become a commonly acceptable method of secure identification, how will people with disabilities be able to use them? Slide 18 BIGGER QUESTION Slide 19 Concept: Adaptable Biometric Sensors Slide 20 Personal Identity Verification of Federal Employees and Contractors Subject HSPD 12 : Policy for a Common Identification Standard for Federal Employees and Contractors (1) Wide variations in the quality and security of forms of identification used to gain access to secure Federal and other facilities where there is potential for terrorist attacks need to be eliminated. Therefore, it is the policy of the United States to enhance security, increase Government efficiency, reduce identity fraud, and protect personal privacy by establishing a mandatory, Government-wide standard for secure and reliable forms of identification issued by the Federal Government to its employees and contractors (including contractor employees). Slide 21 Integration of Biometric Data into ID Badges Slide 22 Possible Entrance Scenario Person approaches sensor Sensor looks for a biometric Face/Iris Fingerprint Voice Slide 23 Question of Accessibility Mobility Impaired Reach the badge reader? Where to point camera? Use the fingerprint scanner? How long does the door remain open? Slide 24 Question of Accessibility Badge reader lowered Fingerprint scanner within reach Lights to indicate operating mode Slide 25 Question of Accessibility Hearing Impaired Sounds cant be used to indicate status Slide 26 Question of Accessibility Visually Impaired How to locate the badge reader? Iris scan might not work How to locate a fingerprint sensor Cant see status lights Slide 27 Question of Accessibility System has to accommodate a wide range of accessibility needs But doesnt have to do it all at once for every person Slide 28 Make the System Adapt to the User Not only have biometric data on a smartchip Have directions for sensor on distance readable format so sensor can adapt Slide 29 Adaptable Sensor Encoded Badge: Transmits directions to scanner Adaptable Sensor: Texture Fingerprint Camera Voice Recognition Visual Indicators Audible Indicators Slide 30 Adaptable Entrance Scenario 1.Sensor receives info and knows what actions to perform 2.E.g., Use camera and fingerprint 3.Display status lights to sighted user Slide 31 Adaptable Entrance Scenario 2 Sensor receives info Sensor adapts, e.g., directs iris camera Door is held open longer Slide 32 Adaptable Entrance Scenario 3 Sensor receives info Sensor adapts, emits locator tone Doesnt enable iris camera, listens for voice and expects fingerprint Emits success tone instead of lights Slide 33 Further Research Nature of the information to be encoded Interaction between badge and system Temporary user conditions Fallback process Appropriate timings and indicators Etc.