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Long-Term Experiences with an Iterative Design of a QR-Code-Based Payment System for Beverages
[chapter]
2013
Lecture Notes in Computer Science
We report on the design and long-term use of a digital tracking system for the consumption and payment tracing of beverages, called "Barkeeper". It is based on tags wearing QR-codes and its design was not primarily guided by efficiency, but rather everyday use during the last three years in our lab. In this trusted environment, we collected extensive usage data, making this a serious long-term field deployment of UbiComp technology. We present the system, its iterative design evolution, the
doi:10.1007/978-3-642-40498-6_49
fatcat:rgjsvnpqunhipa2m3hwsd5etke