The document discusses problems with long checkout lines at supermarkets including wasted time, congestion, and limited throughput. It introduces a character, Mary, who is a busy mother of three that hates wasting time in lines when shopping but has no good alternatives. The document proposes using a mobile scanning and payment app called iScanner to potentially eliminate lines and reduce costs for the supermarket while saving time for customers, but notes that testing is needed to validate whether it truly saves time and if users will feel comfortable with mobile payment.

1. Problem
• Time wasted in long
checkout lines
• Congested shopping
environment
• Limited customer
throughput u Xi Chen Tianhao Huang Yi Zhang

2. Meet Mary: • Housewife, mother of 3: busy life
• Hates wasting time in lines
Thinks Supermarket shopping + line:
• Taking too much time
Sees No way to solve the problem
Feels Frustrated, tired
Does Shop at off-peak hours:
• At the price of less-fresh
vegetables
Problem Scenarios Current Alternatives Value Propositions
Want supermarket to:
• Shorten check-out lines
Supermarket:
• Willing, but..
• Expensive: more staff / check-out machines
With iScanner:
• Eliminates wait & reduces cost

3. MVP Features
o Barcode Scanning
• Does it really save time ?
o Mobile Payment
• Are users comfortable with it?