Considering the portability of smart watch, I try to observe some users using their hand often during their job. So I observe a cook assistant's and a cashier's behaviors during their busy hours in a Vietnamese restaurant near Soda hall.
I found that during their busy hours, the cashier and the cook assistant they don't even have time to wipe sweat. It is impossible to use a hand to take their phone out of their pocket. I try to think maybe sometime the smart watch can help something comparing the mobile to assistant their hands. As a result, I interview those two after the busy lunch time.
I interviewed with the cashier after their busy hours in that restaurant. Her job is a cashier and her husband is a cooker for this small restaurant. And they are also the owner of this restaurant. She had an android phone and it is her first smart phone. she usually put inside of her pocket. The most time, she use the phone is contacting her family and friend, except that will play some game or weChart when she finished her job. During her work, it is really inconvenient for her to pick up a phone or get some notification. She said if the smart watch can help to display or pick a phone call or something like this, It is super useful and she would like to try.
The second one I interviewed is a cook assistant in another restaurant. she is 26 year old and works 6 days every week. She said don't have enough time to spend on APP on her phone even if she has a Iphone 5. when she works, phone is not allowed used during working time. She think the smart watch can potentially assistant her daily work by display some instruction and reminder something like that. Since during her work time , her hands is too busy to deal all kinds of physical task.
Here are some ideas I thought of after interviewing them.
1) Using gravity by movement as a input
2)A User Intersection use your body movement
3) Output a larger screen, maybe your glass
4) Using speech rather than typing
5) Simple UI and less letters
6) Connecting to phone that has a back-end work processor
7) GPS or direction pointer
8) Indicator for temperature, pressure even SOS.
9) Identification for each user
10) sleep wristband
11) fitness wristband
12) PPT projection player
From the interviews, I understand those users don't have full hands available if some design can overcome some realistic problem, it will definitely show its value. And also I learn the really situation is much more complicated than the product I wanna to design, also consider the cost, business mode, comfortable for users and so on.
My selection is designing a App can arrange waiters' work and guide them to deliver food. It is helpful to those whose hand are "busy" so that the smart phone can display something such as direction ,next task or reminder.
My application can let the cashier order the food first and have the phone or computer to distribute the food deliver to waiters by looking the food and accept the task and then the next waiter's watch will update the next available food to deliver. Also waiters can see the food send to which table when he hold the dish. After the food delivered, waiters can slide the watch to finish the task and pick the next one.
I test my design and prototype with my friend and the cashier, who also deliver the food sometime. She thought the idea was helpful. Also she liked the design of the UI. But she is worried about the efficient and how the distribution system works right. After that, she said this app was really clear and easy to use. Finally,she suggested me to make the products to test the system and the real outcome.
After hearing these feedback, I felt that for my next iteration, I will definitely put more time to the phone or computer distribution system which is more complicated and definitely need more design and more software to support. From here, I have a totally new understanding of app design.