Handwritten Digit Leakage from Smartphone Motion Sensors Across Unseen Users and Phone Models

arXiv:2609.32117 · cs.LG, cs.HC · Submitted 2026-09-26 · Read on arXiv

cs.LG, cs.HC

Submitted: 2026-09-26

Updated: 2026-09-26

Comments: 7 pages, 4 figures, 3 tables, 7 numbered equations, and 33 references. Code available at https://github.com/Arritmic/motion-digit-leakage

Code: https://github.com/Arritmic/motion-digit-leakage

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Accuracy — 34× in this paper · explained in 1 episode
• Transformer — 22× in this paper · explained in 2 episodes
• Contrastive Learning — 4× in this paper · explained in 5 episodes
• Verification — 4× in this paper · explained in 2 episodes
• Ablation — 2× in this paper · explained in 1 episode
• Embeddings — 2× in this paper · explained in 2 episodes
• Generalization — 2× in this paper · explained in 13 episodes
• Data Augmentation — 1× in this paper · explained in 7 episodes
• Joint Attention — 1× in this paper · explained in 2 episodes
• Regularization — 1× in this paper · explained in 3 episodes
• Representation Learning — 1× in this paper · explained in 2 episodes

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