@article{activeuserauthenticationforsmartphonesa,
  title = {Active User Authentication for Smartphones: A Challenge Data Set and Benchmark Results},
  author = {Upal Mahbub and Sayantan Sarkar and Vishal M. Patel and Rama Chellappa},
  year = {2016},
  eprint = {1610.07930},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1610.07930v1},
}