@Article{delgado2026imwut,
  author     = {Delgado Rodriguez, Sarah AND Barlage, Katharina AND Prieto Romero, Ismael AND Weisbarth, Timo AND Stetter, Linus and Alt, Florian},
  journal    = {{Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies}},
  title      = {{The Marb(e)lous BB84: Exploring Tangible Interfaces to Explain Quantum Key Distribution to Adults}},
  year       = {2026},
  note       = {delgado2026imwut},
  abstract   = {We explored the use of tangible interfaces to explain Quantum Key Distribution (QKD) – an inherently complex but increasingly
important cybersecurity topic – to adults. Tangible interfaces can support the understanding of complex topics. Yet their
role in cybersecurity remains underexplored, despite persistent demands for security awareness and Quantum Computing
education. To address this, we applied a participatory approach: (1) exploring current explanations through a survey of QKD
professionals (𝑁 = 8) and analysis of popular YouTube videos, (2) conducting ideation workshops (𝑁 = 9) to derive design
considerations, (3) developing the Marb(e)lous BB84 educational interface, and (4) comparing its benefits and challenges with
slides and the most popular video (𝑁 = 43). We found that supporting exploration and playfulness is key, as well as rooting
explanations in real-world scenarios. Our tangible interface was perceived as highly engaging and attractive. Finally, we
contribute design implications for cybersecurity explanation interfaces targeting adults.},
  address    = {New York, NY, USA},
  articleno  = {95},
  doi        = {10.1145/3831971},
  issue_date = {September 2026},
  keywords   = {Quantum Key Distribution, QHCI, BB84, tangible user interface, tangible interface},
  number     = {3},
  numpages   = {35},
  publisher  = {Association for Computing Machinery},
  timestamp  = {2026.10.20},
  volume     = {10},
  url        = {http://www.florian-alt.org/unibw/wp-content/publications/delgado2026imwut.pdf},
}