Hacker collective Hack42 from Arnhem also experimented with laser Café Noirs.
That somebody was Utrecht-based events platform SETUP, who laser etched traditional Verkade Café Noir cookies with QR codes and handed them out during the Beschaving Festival at the end of June. SETUP doesn’t say how they kept tracking the cookies once eaten.
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(Via Trendbeheer. Photo by Dennis van Zuijlekom, some rights reserved. Video: Youtube/SETUP.)