Hello #38C3, it seems as if there might be some GPS spoofing going on in the building. This might change the clocks of your phones. If you use your phones as alarm clocks or medication timers, that might be a problem.
If you read this and experiment with spoofing broadcasts of this kind: Please consider if you're cool with people potentially missing important medications due to these experiments, and whether you think that's "excellent to each other".