Tuesday 13 March 2007

Cognitive Walkthough by Maureen


Despite it being a delicate, warm, spring day, Maureen insists on her coat as she leaves the house for the supermarket.

Having made her store card for the ShopNav during her previous visit with the assistance of a store employee, she’s now ready to give it a go.

She already feels a bit uncomfortable by breaking her old routine; having to collect the trolley from a new area of the store, but she’s willing to give it a go.


Task 1: Entering Store card into ShopNav device
“Swipe Card” reads on the computer screen of the ShopNav (or NavShop as Maureen remembers it). She swipes the card several times with the barcode facing the wrong way, however eventually proceeds to the next screen. It worked on her final attempt before she approached a store assistant – the only reply she got was “try again”.
“Enter Pin”. Knowing a strong memory isn’t the best of her qualities, she wrote the PIN code when she made her store card last week. In her purse, she retrieves the small slip of paper and carefully enters. A sigh of relief it worked!

Improvements
- Insert card instead of swiping
- Another solution for pin? Is it actually required?


Task 2: Using the product search facility
Maureen’s shopping list:
Milk - Bread - Baked Beans - Oranges - Murray Mints - Tomato Soup x2 cans - Eggs - Orange Squash -Teabags

The instructions on the screen clear and she knows what she must do. However typing is very time consuming and Maureen’s becomes a bit frustrated with her slow typing speed and having to stand in one spot for so long.
Selecting products on the whole is fine, however, there is some confusion where Maureen is unable to remember the exact name of the product. She’s always remembered and gone by the pictures and colours on the label.

Improvements
- Intelligent search
- Display photos of items


Task 3: View Recommendations
“Ahhh finally - Can I just get my food now?” She mumbles to the screen. Having clicked done in the shopping list, a recommendations list appears. Maureen is slightly shocked, and reads the screen intently. After reading a bit, Maureen is a bit confused and decides to ignore it all by pushing “Begin Route”.

Improvements
- Display where in the shopping process she is – what’s going to happen next
- Show on what basis the product recommendations are coming from


Task 4: Navigate user around the store
Very happy to be moving Maureen carefully follows the large arrows directing her to the appropriate aisles. She becomes a bit concerned about being put off track when she has to move around obstacles. However this concern is eliminated by the “distance to item” reading on the screen.


Task 5: Adding product to Trolley
She places a bottle of milk into the trolley… a beep… she immediately looks at the screen for any changes. “Ah, the milk has appeared on the side of my screen – How did that happen?”.

Improvements
- Explain when you place a item in the trolley the barcode is automatically read, perhaps show an animation


Task 6: Removing a product from the trolley
Walking away from the ‘Juice’s Aisle’, Maureen becomes aware of an offer on a bottle of squash that she would like to swap with the bottle currently in her trolley. Apprehensive to experiment with this new piece of technology, she decides to ignore the 10p saving.

Improvements
- As with Task 5 – show an animation of the correct action/how barcode reader works


Task 7/8: Paying for Shopping
A notification appears on the screen informing her she has all the items she entered at the start. An option to pay by “card” or “at the counter” appears. Instantaneously she pushes “at the counter” for she is not keen on credit cards.
She goes straight to the cashier and hands the total displayed on the screen. The cashier inspects the trolley and screen and helps Maureen pack her bags.
“Do you not trust me?” questions Maureen “Do you suspect me of not declaring all the items in my trolley?”

Improvements
- Payment without the need of a cashier - being able to walk directly to packing counter

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