![](https://s3images.coroflot.com/user_files/individual_files/19828_fz7wz4eqaawklhnhb2zddc63u.jpg)
HD UHC alert sketches. One of the challenges was to see the alerts from a distance, and at awkward angles.
![](https://s3images.coroflot.com/user_files/individual_files/19828_lrcd_nrwan0bh7wy2mmrowbbu.jpg)
After several research sessions observing how the UHC was used throughout the day, we developed a hierarchy of inputs and outputs to inform our concept exploration.
![](https://s3images.coroflot.com/user_files/individual_files/19828_suhshojba6biifujzlnfemfl9.jpg)
Because of the complex processes involved, we used storyboards to build use case scenarios.
![](https://s3images.coroflot.com/user_files/individual_files/19828_zgzoyk2kjnt4eh5qlhmo3iauv.jpg)
We turned our static concepts into a full scale interactive prototype.
![](https://s3images.coroflot.com/user_files/individual_files/19828_8mqpj6fthimtercbeptgtsof8.jpg)
We used the prototype during research sessions with crew members to shape the final design.
![](https://s3images.coroflot.com/user_files/individual_files/19828_8te8mfhysurastd75gzldkqhd.jpg)
Alerts can easily be seen from a distance.
![](https://s3images.coroflot.com/user_files/individual_files/19828_zg9gq02459ongrlyfn_o_0u0j.jpg)
Today, our new alert protocols are being used throughout McDonald's worldwide.
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