For the research on honeybee behaviour in the BeesBook project, all bees in a colony are tracked over their entire lifetimes using circular tags that uniquely identify every individual bee in the hive. The identification and documentation of bee tags required in various field experiments is currently done manually, an approach that is inconvenient and error-prone. In this thesis, a mobile application for the decoding of bee tags is developed that aims to automate or eliminate parts of the manual data collection process, improving its efficiency and reliability.