Usability Testing. ISBVI_Magnifier

Transcription

1 T Usability Testing ISBVI_Magnifier

2 T Magnifier Indiana School for Visually Impaired Students

3 Project Charter Team Project Outcome Target users ISBVI Project description Magnifier for visaully impaired students Mechanical device + Magnifier application Visually imparied students in Indiana school Visually impaired students struggle to read small fonts commonly used in textbooks and novels, and magnification technology today is typically bulky and expensive. Our team s goal is to create a mechanical device and application for tablets to magnify and display text for visually impaired students that is both compact and cost effective. Objectives To improve the quality of life of visually impaired students To remove the hindrances of bulky, expensive magnification equipment To bridge the gap in opportunities between visually capable and visually impaired students To facilitate access to information written in small fonts such as in textbooks and novels for visually impaired students User Needs Application User Needs 30X Optical Zoom Zoom Control Color Options Battery Life Image Capturing Split-Screen Capability Intuitive User Interface Mechanical User Needs Cost: $1, Cost: $3, lbs Portability Luggability Direction Control $750 - $1000 Multiple Viewpoints Lighting Cost

4 Design details

5 T Planning & Preparation

6 Testing plan Object Testing Subject Testing methods & Setting Testing Metrics Explore the usability of the Magnifier Mechanical device + Magnifier application Think aloud Observation Interview them before and after Agree& disagree scale 1 Interviewer 2 observers Learnability Memoriablilty Effeciency Effectiveness Satisfaction Elgonomically fit to user Participants Testing time Recording data GroupA (6 students with experience of magnifier they are actual visually impaired students in Indiana school) GroupB (5 random people without experience of magnifier / no visually impaired people ) Intention : It was hard to get actual feedback from our actual target users so we performed another testing with adults participants who are are more likely to give us feed back on interface) minutes for each participants Notes / Voice recorder / Iphone / Photographs

7 Session outline_group A

8 Session outline_group B Memorability memorize imparement apply instruction

9 Session outline_group B Memorability memorize imparement apply instruction

10 Script for visually impaired people

11 T Data collection & Analysis

12 Data collection & analysis Answers from GroupA Participants Q1 Q2 Q3 Q4 Q5 Q6 Q7 Participant1 Rotating camera 2 3 Enough No Too small Yes Participant2 Colors 3 4 Enough Yes Complicated I dont know Participant3 Buttons 3 4 Enough Yes I dont know Yes Participant4 Camera 2 5 Enough Yes I dont know I dont know Participant5 Adjusting position easily 2 4 Enough Yes No I dont know Participant6 Easy to operate 4 4 Enough Yes I have no idea Yes

13 Data collection & analysis Answers from GroupB Participants Gender Age Wearing glasses What kind of devices do you use? How long do you spend time using digital device? Participant1 F 18 No Phone, Laptop, Ipad 2 hours Participant2 M 20 Yes Laptop, iphone 5 hours + Participant3 F 19 Yes Phone, Laptop, Ipad,- Camera - 2 hours Participant4 F 23 Yes Laptop, iphone 6~7 hours Participan5 M 20 No Kindle, laptop, phone 1~2 hours

14 Data collection & analysis Agree or Disagree chart Strongly Agree Agree Undecided 1.5 Disgree Strongly Disagree Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 P1: Participant1 P2: Participant2 P3: Participant3 P4: Participant4 P5: Participant5

15 Data collection & analysis Metrics Participants Learnabilty Memorability Efficiency Effectiveness Satisfaction Time Time Error Time Thinking Error Rate min Participant1 1 min 1 min 0 1 min Very efficient Very comfortable Using None 3 the device Participant2 1 min 1 min 1 min 0 Very 1 min comfortable Very efficient Using None 4 the device Participant3 3 min 1 Took 3 min 1 min The 2-3 min time to 1 error 3 orange efficient get to button know the device. Participant4 Participan5 2:30 min 1 min min Took 2-3 min time to efficient get to know the device. None 3 2 min 1 Took 2 min 1 min The 2-3 min time to orange efficient 1 error 2 learn button to work with he device

16 Data collection & analysis Participants Comments Participants Pros Cons Participant1 XY table moves smoothly App interface is very simple & nice. App buttons should be marked which one has what function. App buttons should be brighter & bigger. Participant2 The colors of the icons in the app are clear The zooming button helps a lot The XY table is resistant towards moving to right Not too much delicate, sturdy looking, The icons are not very clear/ they also need to be bigger The white space when the page is split in two is too much. Instead the images should be bigger Participant3 The fonts are good Changing the colors on the app is easy The orange button symbol seems like a refreshing, or a back button. The icons are hard to read, too small When the page is split the images should be bigger Participant4 The XY table is easy to move Bigger icons would be much better The images in the split screen are small The XY table is not easy to write on, If the XY table was kept still at one point that would avoid any unwanted movements A small storage place for a pen or highlighter etc Participan5 No comments Not comfortable looking at led screem for a long time. The charger lime of ipad is bothering.

17 T Report & Suggestions

18 Suggestions 1. Buttons in ipad are so flat. It might be hard for them to find and remember which button goes where, because visually impaired people tend to rely on other senses beside eyes. Use sound or size of button for them. 2. Make a place for the charger in case charging was needed. Currently the wire seems to be in the way.

19 Suggestions 3. Make the screen bigger while having the split page.. The buttons on the app are small, and the symbols are sometimes hard to recognize for the users. According to Ms. Starrfield it s completely inaccessible. Making them bigger, would be a huge help. 4. Make a small storage place so that you can store a pen or a pencil,

20 Suggestions 5. Using ipad for a long time might have a bad effect on even people who don t have the visual impairment. If there was a way that could make it possible for the potential user to switch to something else (even for a short time) it would make it a lot easier to work with and much more efficient. 6. If the XY table had a stop, it would be much better and easier to work with. Currently it s not easy to write on, and also it s very easy to move in case of an unwanted hand touch.

21 T Thank you