  Case studies of application software data models indicate that timestamps are
excessively used in connection with user activity. This contradicts the
principle of data minimisation which demands a limitation to data necessary for
a given purpose. Prior work has also identified common purposes of timestamps
that can be realised by more privacy-preserving alternatives like counters and
dates with purpose-oriented precision. In this paper, we follow up by
demonstrating the real-world applicability of those alternatives. We design and
implement three timestamp alternatives for the popular web development
framework Django and evaluate their practicality by replacing conventional
timestamps in the project management application Taiga. We find that our
alternatives could be adopted without impairing the functionality of Taiga.
