Uncovered code can hid ticking time bombs. This video taken from a joined webpresentation of Verifysoft and QATestLab (Kiev) describes the benefits of code coverage. The example shows how the MP3 player Zune bug could have been avoided. Although all requirements had been tested and Statement Coverage had been achieved, an error came up in a crucial part of the software. Sebastian Götzinger shows that releasing uncovered code by acccident is avoidable.