Daylight Contrast Control
Usage environment was a prime consideration when deciding the color scheme of our interface. I frequently loaded mockups onto my phone and took them into direct sunlight to simulate the attendant's viewing environment and experience. Because usability and speed were key to providing a smooth experience to ACE's lot managers and customers, I knew that attendants would want a tool that could be easily read in all lighting conditions. Some lot managers work the night shift and some work the day shift, so providing an interface that could adapt based on lighting conditions was a must.
Airport Parking Connection offers a feature in the settings screen that enables dynamic contrast adjustment for better legibility and viewing based on the lighting environment. When the user is in direct sunlight, the app darkens the menu bar and tab bar, and uses a thicker font weight of all text to make it more prominent. Additionally, the background behind reservation cards darkens just slightly to accentuate their borders and help the attendant distinguish between individual customers.