Problems in
design 1

1.  Home screen is not 
   conveying sufficient
   information for the
   tasks described. 
2. All three users tried 
   clicking on Joe's photo 
   on the home screen 
   to view information 
   that Joe's friend can 
   see about him.
3. One user said that "I would
   turn off the app since it  
   does not convey useful  
   information when I turn it on."

1. All users thought that
   "Friend" and "Deals"
   beside "LocaShare"
   (at the top of the
   screen) was clickable.

1.  The "My LocaShare"
   and "Bob's LocaShare"
   are confusing. First,
   users cannot recognize 
   it's a button. Second, the
   meaning of the arrow 
   direction is rather 
   confusing.
2. Users have the mental
   model to click on his on
   picture to view how
   friends view me instead of
   clicking on my friend and 
   exchange the position.
   
3. User habitually assumes
   that the picture on the 
   upper left corner should
   be me rather than my friend.

1. Users tend to be overwhelmed
   by so many settings in one page.
2. The two chart (pie chart and the bar graph) 
   on this screen seemed to convey the same  
   information.
3. Users are unable to know what changes they have
   made.

Solutions for
design 2

1.  Make home screen more
   interactive, carry more 
   affordance and relevant 
   information.
2. Make Joe's photo 
   clickable.
3. Make it more intriguing to 
   users.

1.  Remove the
   confusing
   "Friend" on the
   navigation bar, since 
   it does carry any
   functionality but brings
   confusion to users.
2. For simplicity and
   internal consistency in
   a single page, we
   move "friends near you"
   to the home screen
   and only keep the lower
    part.

1.  Move this functionality to
   the profile picture in the 
   home screen. It brings user
   to a personal profile like
   page with a list of friends to
   choose from. 
2. Try to avoid putting two 
   profile pictures in the same
   page at the same time.
   
   

1.  Use a tab menu and have a page
   for each setting. It also allows user
   to skip some settings.
2. Since both the graphs in the preferences screen 
   seemed to convey the same idea, we decided to
   use only one to make the task 
   more efficient for the user.
3. We provide a summary page to let user know 
   the changes they have made.

#1

‧ Learnability/Efficiency:
1. Multiple accessibility: Liked
that we provide two ways to
access to friends. One is
by clicking on friend’s
picture on the map in the
home screen and the
other way is by clicking
on “My friends.”

‧ Learnability 
1. Not speaking user's   language:  
"What" is ambiguous. She   
suggested that we should use  
"History" or "Statistics" instead.
 
‧ Efficiency
1. Add multiple people to a 
LocaShare: We should support
adding multiple people to a Loca-
Share. User suggested that this
could be achieved by 
    i. Choosing multiple people 
       while creating a LocaShare.
   ii. Have a "who" tab in the
      setting menu to add people
      and view people who has 
      already been added in the
      LocaShare.

2. LocaShare naming: The app
should allow users to name the 
new LocaShare, since it makes
LocaShares easy to remember.
User also suggested that we
could provide a default name
of a LocaShare, but it should
be fragile.

‧ Learnability
1. Different conceptual model:
I should be able to know all the
LocaShares that I have with Bob,
rather than just showing the
aggregated location sharing 
information.

2. Not speaking user's   
language: 
The sentence "View me as Bob" 
is confusing. 

3. Different conceptual model: 
User tried to click on Bob's  
profile page and find a way to 
view how Bob sees me. (This 
behavior is just the opposite 
from what we faced in first 
iteration). 

‧ Efficiency
1. Too many button clicks:
User felt annoying when she
was informed that there is 
still one more button click 
to finish creating a 
new LocaShare. She 
suggested that the app
should just show the inform
without asking user to click 
on "ok".
 

1. Option to "Duplicate" the
locashares to create them
for other people.

2.Should provide a list of LocaShares.

#2

‧ Learnability  
1. Unclear affordance: User
suggested to have an icon below
the photo to show an affordance
of clicking


‧ Visibility
1. User expressed that she 
would like to know her location
on the map in the home screen.

‧ Learnability 
1. Not speaking user's   
language: Instead of using "What" to
mean statistic charts, we should use
"History" or "Statistics". Also, instead of
using "Where" and "When", use "Location"
and "Time" would be more clear.

2. Inconsistent time display: 
It is bad to use both military time and 
normal time. 

3. Different mental model: Show
different times for different locations?
Right now all the times in the "When"
tab map to all the locations in the
"Where" tab.


‧ Efficiency
1. Duplicate charts: User suggested to
have only one chart with a bar to control
the frequency instead of having daily,
weekly, and monthly three separate
charts. (Or, it should use different charts
in different context. Restaurants -- how
many times, Location Tracking --
amount of time) 

2. Global function: User should be able to
set a global preference which overrides all
the LocaShares. (For example: During this
time, I don't want to be seen by anybody.)

‧ Learnability 
1. Different conceptual model:   
User tried to click on Bob's   
profile page and find a way to  
view how Bob sees me. She says
that since the information is "seen
by Bob," it should not be in my 
profile page.

2. Number of times in the chart
is confusing: Say they're at a
restaurant and they get a phone
call. So they exit the restaurant,
complete their phone call and
come back. Does that constitute
two visits? Displaying the
amount of time on the chart
may be more useful.

1. User would be more interested in an
app which shares her exact location all
the time, but she is allowed to specify 
the when to share.

2. User suggested that it may be more 
intuitive to give the user an option of
specifying how long they would like
information to be stored (in number
of days)

3. What if there are multiple restaurants
in a building. How would LocaShare 
identify the location as?

4. Can you send a text message to
 that friend as well?

#3

‧ Learnability  
1. Affordance mismatch: 
The bubble-like shape that looks 
like Joe is "saying" something.

‧ Learnability 
1. Inconsistent time display: 
It is bad to use both military time and 
normal time. 

2. Not speaking user's    
language: Instead of using "What" to 
mean statistic charts, we should use 
"History" or "Statistics". 

3. Different mental model: May I add the 
date to "when"? That is, may users are 
allowed to set an expiration date for a 
LocaShare?

4.  Different mental model: The location
and the time to share the location should 
have one-to-one mapping. User suggested
to associate "When" inside the markers on
 the map in "Where". When you click on a
 marker, a new window pops up and you
 can add it. Then you can add time and
 other details in that window. Should also
 be able to delete the markers

‧ Efficiency
1. Recognition v.s recall: User suggested
that we should provide the locations we 
have already decided to share, they are 
uneditable, but would serve the way to 
remind user where they have already
shared.

2. Recommended location settings:
User said that it would be helpful to show
past statistics of locations I usually share
with others (simplify the need to create
 new locations on the map)

3. Grouping for friends: User suggested
that we should allow users to create a group
of friends.

‧ Visibility 
1. User did not notice that there is a  
"minus" button there allowing her to 
 delete time. 

‧ Learnability  
1. Not speaking user's    
language:   
The sentence "View me as Bob"   
is confusing 

2. Different conceptual model:   
User tried to click on Bob's    
profile page and find a way to   
view how Bob sees me.  

3. Confusing icons: 
User asked why there are two 
pictures when I try to view me as 
Bob?

4. Affordance: Instead of using
charts, user suggested that we
can use a map with multiple locations
indicating the places a person has
been to. And use the size of the
bubble to show how many times
a person has been to the location.

1. If Joe wants to notify Bob that he
 will be in Boston on Friday night, Bob
 has to to go view Joe's profile to view
 whether Joe is in Boston. It may
 already be too late. Having some kind
 of alert (using color or notification) will
 be helpful whenever a new LocaShare
 is created.