Problem:
- The client had a Point of Sale (PoS) system that was built in C++ and which had an appearance that was out of date
- The CTO asked for an estimate of development cost for a new U/I and found the original estimate to be too high
- The new PoS had to be built in Visual Basic and it's main interaction was to be moved from traditional keyboard to a touch-screen
Solution:
- We estimated the project and formalized the requirements (unknown to us, our estimate was 1/8 of the internal estimate)
- We developed the U/I using some advanced techniques to ensure that the U/I could handle the real-time interactions with various devices
- We documented the application and trained the client's internal engineers on the architecture and the techniques that we had used
Result:
- We developed the system on time and on our projected budget, saving the client almost 90% of the cost they had originally projected
- The system has been running (almost without modification) since the year 2000 and is still considered to be the benchmark for PoS touchscreen U/I in the client's industry
