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When Joe starts LocaShare,he sees
the home screen shown in the figure.

* Upon clicking the link “view” near
(i), he sees the names of social contacts
that are near his current location. By
clicking on the button “View Contact”,
he can view further details.

* Upon clicking the link “view” near (ii), he
sees the names of people who added
him as a contact. The relationship between
Joe and that person (e.g., Susan) is not
established till Joe also adds Susan as his
social contact. By pressing the button “Set
Permissions”, Joe can add Susan to his
list. If he does not want to share his location
information with Susan, he can choose to
“Deny Request” and Susan would not be
able to track his location (since he will not
appear as her social contact). By selecting
either “Set Permissions” or “Deny Request”,
he can remove the person’s name from this
screen (otherwise, LocaShare will keep
reminding him till he takes one of the two
actions).

* Upon clicking the link “view” near (iii), he sees
a list containing thenames of stores that are
offering discounts or sales in exchange for his
location information.

In all the three cases, he can choose to return back to
the home screen.

Pros:
- Easy to learn where
to click and how to navigate.
- It is easy to learn how to
navigate because the
labels are self-descriptive.

It provides good affordances to
help the user understand what she
 would see when she clicks on a link.

Cons:

Pros:
Easy to navigate.

Cons:

Pros:
Nothing
dangerous can happen.

Cons:

Pros:
The most essential capabilities are
directly visible.
Graphical representation of what the task entails.

Cons:
However, only numbers
are directly
visible, if you know that
someone has
added you (if they notify you), you
still have to click the "view" link and then acknowledge the relationship.

Joe starts from the home screen and clicks on the
tab “Social Contacts”. He is then taken to the screen
shown here that can be considered the “Home
Screen” to handle his social contacts. Here, he can
(i) search for an existing social contact or (ii) add a
new one.

Since Bob is not on his contact list, he
selects “Add New Contact”. He is then taken to the
screen that shows the various settings he can use
to control the amount and type of his location
information that Bob can view. He first enters the
contact’s name (Bob) in the text field. Since he is
primarily interested in sharing his location information
with Bob during the ski trip, he selects “Sunday River”
on the map by clicking on the appropriate location
(by zooming in/scrolling across the map/using
other features that the map API provides). After
receiving the selection from the click, Joe sees a
feedback in the form of a keyhole marker. He can
choose to add additional permissible locations, but
in this scenario, he does not want to. He then enters
2 in the textfield for radius and selects the option of
GPS coordinates for the value. Now, Bob will be able
to see his GPS coordinates in a 2 mile radius around
Sunday River. Joe can also select the frequency of
share and selects it to be daily (since he wouldn’t be
moving too far from Sunday River on an hourly basis).
He selects a time range during which Bob can view
his location. Here he selects 9am-9:30am. Suppose
that he also chose to share between 11:30am and
4pm. In that case, Bob will not be able to view Joe’s
location at 6pm (for example). He choose not to let
Bob see his aggregated information and thus leaves
the checkbox titled “Allow Aggregation?” blank.
He can create settings according to
what he wishes to share (in detail or
in aggregate) with Bob. He
then clicks the button called “Save Contact”. He can
also cancel the form and start it again, if he wants to.
Now, Bob will receive a notification on his “Home
Screen” that Joe added him as a contact. If he would
also like to share his location, Bob can add him as
a contact and the relationship would be established
on LocaShare.

Pros:

As in the other screens, the information scent is
strong because the user is able
to identify and keep track of which
part of the application she is in.

Some of the location-sharing
options are not easy to learn.
If you are just given a
map, how
would the user learn what to do with it?

Cons:

Pros:

Since all the features are
clearly labeled, user can
set the
sharing options very quickly.

Cons:

Pros:

Possible to make
mistakes and over-/under-share
information.

Cons:

Pros:

Controls are clearly visible.

Cons:

Since Joe wants to modify the location permissions
for Bob, he first searches for Bob on the “Home
Screen” for social contacts. After he comes to
Bob’s profile, he clicks on Bob’s icon/photo and
comes to this screen. Here he view the amount
and type of information that Bob can view about
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allowed Bob to view his aggregated information.]
Joe can see that Bob can see his current location
as the lat/long in Cambridge, MA (his current
location). He also sees the pie chart/wheel that
describes the categorization of places that Bob
was able to view about him. He can now choose
to modify the permissions by clicking on the button
called “Modify Permissions” or can choose to
return by clicking “Cancel”. Once he clicks “Modify
Permissions”, he taken to the permissions sketch
described in task 1.

Pros:

Cons:

The task is not very easy to learn in these two slides, since the bulk of the editing happens in the permissions screen.

Pros:

Cons:

May be helpful to have a "Cancel
This Option" button beside the
specific/aggregate information
display. That way, the user does not have to go to the permissions
screen to cancel aggregation option (for example).

Pros:

Cons:

No irreversible action possible in these two screens.

Pros:

Cons:

The data that the
social contact (user's
friend, for example) can see is very visible
and easy to understand.