As a final project for INST631 (Fundamentals of Human-Computer Interaction) at the University of Maryland, I designed a new technology to be used by the Ghostbusters.
I created a product called Spirit Billing—a piece of client invoicing software that integrates directly with the Ghostbusters’ ghost trap technology. Spirit Billing can be used to generate an invoice and charge a specified client for their outstanding balance based on the contents of the ghost trap. My final product helps the Ghostbusters conduct business more smoothly without modifying their existing ghost trapping protocol.
After capturing their first ghost at a fancy hotel, Peter rattles off a list of various fees owed and jots them down on a paper invoice to hand off to the client. Peter has to remove his gloves to write on the pad of paper, and viewers never actually see the Ghostbusters collect payment. It would be beneficial for the Ghostbusters to have an easy way to invoice clients and accept payment onsite at the time their services are rendered, especially since their initial loan to cover their business startup costs has such a high interest rate.
When starting to develop my low fidelity prototype, I first identified the precise tasks I would like the user to be able to perform. My initial list of tasks was as follows:
I made the following assumptions:
After testing my low fidelity prototype with two people, I identified three changes to implement in my high fidelity prototype:
I created a high fidelity prototype using InVision. I also developed a protocol for usability testing my high fidelity prototype and tested it with five subjects.
After analyzing the usability testing results, I identified areas for improvement and implemented two major changes to my final prototype before conducting another round of testing with five new subjects:
© 2023 Kristen Marie Byers