@article{theopenvaultchallengelearninghowto,
  title = {The Open Vault Challenge -- Learning how to build calibration-free interactive systems by cracking the code of a vault},
  author = {Jonathan Grizou},
  year = {2019},
  eprint = {1906.02485},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1906.02485v1},
}