 
Bob's page and his location info. The location info. Joe is sharing with
Bob
Permission setting of Joe for Bob
| Joe enters Bob's page as in Task 2.
In addition to viewing Bob's shared
location with Joe, Joe can view how
Bob sees his location information by
clicking on the " < My LocaShare"
button.
Joe modifies Bob's permission by
clicking on the "Edit" button at the
bottom and enters the permission
setting. The permission setting page
is the same as the on in Task 1. | Pros:
1. Users can learn by clicking
on the Edit button. Then he would
realize it is a way to modify the
location you are sharing with Bob.
Cons:
1. The word "Edit" might
be misleading. Users might
interpret it as "edit my profile
picture","edit my location", or
"edit my name", etc. Should
use a more precise word to
express "Edit the information
you are sharing with Bob." | Edit can be done by
a click on the "Edit"
button.
(The efficiency for
permission setting
is discussed in
Task 1) | The only error here
would be mistakenly
click on the "Edit" button.
However, we can
easily undo this action
by providing a "Back"
button. (or using the
Back button on browsers
or mobile phones.) | The "Edit" button is salient
to draw users attention. |