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									Pocket Change

E-cash and finance manager


                Manager: Tudor Antoniu
                Programmer: Ben Schleimer
                Documentation: Tali Roth
                Tester: Stephen Will
                Visual: Heath Silverman
Overview

Overall Problem and Solution
Representative Tasks
Design Evolution
Description of the Final UI
Summary
Overall Problem

Wanted an electronic-cash system
 capable of making purchases and
 organizing finances
Need to keep track of multiple
 checking, savings, and credit card
 accounts
Has to be easy to use for people with
 little computer experience
Must be fast and secure
Solution

We developed Pocket Change -- an
 electronic-cash system, capable of:
  purchases or any type of cash exchange
  communicating with other e-cash devices
  money management
  transferring between separate accounts
Solution

Implemented viewing of multiple
 checking, savings, and credit card
 accounts in Pocket Change program and
 multiple account management via web
 banking interface
Solution

Pocket Change -- an electronic-cash
 system, useful for buying and
 transferring money
Also keeps track of multiple checking,
 savings, and credit card accounts
Easy to use for people with little
 computer experience
Fingerprint confirmation
Solution

Pocket Change -- an electronic-cash
 system, useful for buying and
 transferring money
Also keeps track of multiple checking,
 savings, and credit card accounts
Easy to use for people with little
 computer experience
Fingerprint confirmation
Major Changes From HE

Multiple checking, savings, and credit
 card accounts are allowed
Privacy controls keep people from being
 able to check your balance
More feedback alerts the user of
 possibly overdrawn accounts
Extra fingerprint protection adds
 security for transactions
Major Changes - continued

A user can no longer send more money
 than they have
Confirmation screen on the web page
 gives users a sense of security
Help screens were added
User Tests

Tested most of the functionality of
 Pocket Change in three user tests
Test 1: An E-cash transfer between
 user and a store
Test 2: An E-cash transfer between
 the user and another person
Test 3: Recording a check and transfer
 money from the Bank to the Pilot
Demo User Test 1...
Test One Bottom-Line Results
                                  Time to Completion
This test was the                 3:00
                                           2:55
                                                    2:30

 easiest. Involved        Time
                                                            1:45


 reviewing amount of
                                   1:30
                          (min)



 money in account and              0:00
                                          User 1 User 2 User 3

 buying a shirt.                                   Us ers



Average time to                  Errors performed
                                    2

 complete: 2:25 mins.             1.5       1        1      1

Avg # of Errors
                        Erro rs     1

                                  0.5

 performed: 1                       0
                                        User 1 User 2 User 3

                                                  Use rs
Test 1 - changes to be made

Participants felt that
 the “OK” button on this
 screen was unnecessary
 and somewhat
 misleading because they
 couldn’t cancel.
Solution: make this
 screen go automatically
 to the next screen.
Demo User Test 2...
Test Two Results
                              Time to Completion
This test involved               3:00

 the user                Time
                                          1:52
                                                  1:30    1:30

 transferring money
                                  1:30
                         (min)



 to “Irene”.                      0:00
                                         User 1 User 2 User 3


Average time to                                 Us ers



 complete: 1:37 mins.         Errors performed
                                  3

Avg # of Errors
                                                          2
                                  2
                                                 1
 performed: 1
                        Erro rs
                                  1
                                          0
                                  0
                                      User 1 User 2 User 3

                                              Use rs
Test 2 - changes to be made

Participants didn’t
 notice or interpret
 the “<=“ button as a
 backspace.
Solution: Change the
 button name to
 “back”.
Demo User Test 3...
Test Three Results
                                Time to Completion
The user recorded a              10:00    8:45

 check & transferred    Time
                                   6:40
                                                   6:00    6:00


 money from Bank to     (min)
                                   3:20


 Pilot.                            0:00
                                          User 1 User 2 User 3


Average time to                                  Us ers



 complete: 6:55 mins.           Errors performed
                                  8
                                          7


Average # of Errors              6


 performed: 2.5
                        Erro rs   4

                                  2                        1
                                                  0
                                  0
                                      User 1 User 2 User 3

                                              Use rs
Test 3 - changes to be made

Participants were
 confused about the format
 of the Date and Amount
 fields
Solution: Make the Date
 have a “MM/DD/YY”
 format and the Amount
 have a “$0.00” format.
Test 3 - changes to be made

Participants were
 confused about the
 format of the Transfer
 funds field.
Solution: give it a $0.00
 format so users have
 more feedback.
Test 3 - changes to be made

All of our
 participants had
 trouble finding the
 PocketChange SignIn
 Button.
Solution: we need to
 make it more obvious
 by changing its size
 or color.
Summary

Pocket Change is a convenient way to
 track finances and use E-cash
After the HE, Pocket Change was
 modified to increase it’s account
 tracking and security features
The User Tests showed us how real
 users responded to the interface
Pocket Change will be modified as per
 the problems found during user testing

								
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