40C3 halfnarp – Submit talk preferences to aid scheduling

The Chaos Communication Congress (40C3) is asking attendees to submit their talk preferences through the "halfnarp" tool to help reduce scheduling conflicts in the event's program. Users can select talks they want to watch across different rooms and days, with the system visualizing scheduling correlations to optimize the timetable. The organizers encourage participants to report any issues and direct questions to their FAQ and blog for more information.