@article{han2026pin,
  author  = {Feiyu Han and Zelei Wang and Yuanhao Feng and Jinyang Huang and Meng Li and Panlong Yang and Zhangjie Fu},
  title   = {Use Your PIN Securely: Acoustic-Based Second-Factor User Authentication with Enhanced Tap Biometrics},
  journal = {IEEE Transactions on Dependable and Secure Computing},
  year    = {2026},
  doi     = {10.1109/TDSC.2026.3710224},
  url     = {https://doi.org/10.1109/TDSC.2026.3710224}
}