One of the biggest project I’ve been working on for the car wash industry.
Nine months of fascinating and hard work.
Weeks of research, 480 hours of design and 300+ screens.
Working hand in hand with the Android developers
for more than 6 months. 2 months of testing
and debugging and finally release on PAX STORE.
Introduction
My goal was to re-build the outdated .NET Core Car Wash POS System used on more than 2000 car washes across United States.
Switch POS to Android handled devices and keep the “evolution, not revolution” concept for wide range of the Android devices from PAX.
PAX A620
– 5-inch FHD 720x1280px
– NFC, Apple Pay, Google Pay
PAX A920
– 5-inch FHD 720x1280px
– LPR System
– NFC, Apple Pay, Google Pay
PAX E600
– 8-inch FHD 800x1280px
– LPR System
– Built-in thermal printer
– NFC, Apple Pay, Google Pay
PAX E700
– 12.5-inch FHD 1920x1080px
– License Plate Recognition System (LPR)
– Built-in thermal printer
– NFC, Apple Pay, Google Pay
We launched the POS Software on 4 PAX devices in March 2021 on more than 400 locations across the US
The Old Version
These are just a few screenshots of the old version of POS. I believe that was designed back in 2000. The POS was user-unfriendly, buggy and slow.
The Target Audience
Car wash managers and attendants are the target audience for this product.
And there were a few things I had to keep in mind:
Some tunnel and in-bay car washes have up to 1000 vehicles a day, so the employees can be in real rush;
The elements on the screen have to be a bit bigger, so car wash employees can easily tap on any element when they are in rush;
Car wash workers can take the device outside;
And of course, the interface have to be clean, intuitive and user-friendly.
Mind Map & Wireframe
Firstly I had to understand all business logic and processes, so I spent a few weeks using the old POS and made a massive document with the notes.
And only then started mind mapping and got to the wireframing.
Mock-ups
At first we were planning to use PAX E600 only, so I started from the vertical layout for the 8-inch 800x1280px screen.
Later on, top management decided to add one more device and that’s where landscape layout started.
3 months
It took me 3 months from the
very first block on a mind map
to the finalized prototype
300+ screens
More than three hundred
screens have been designed
for the portrait and landscape
6 months
Almost half a year of development
and work hand in hand with the
Android developers team
On The Go
Since a lot of car washes were using previous POS software for more than 10 years, I had to keep the same core features:
Read & save license plates (we use Open ALPR);
Subscribe customers for the unlimited plans;
Sell wash books and single washes;
Redeem gift cards and wash books;
Employees punch in punch out;
Open / close gates;
Send commands to a controller.
I showed here just a few screens of the POS software. If you’re interested in seeing more stuff please visit washify.com or contact me