@article{Makoto Nagatomo20192019GCL0024, title={Personal Identification with Any Shift: Authentication method for smartwatches having shoulder-surfing resistance}, author={Makoto Nagatomo and Kazuki Watanabe and Kentaro Aburada and Naonobu Okazaki and Mirang Park}, journal={IEICE Communications Express}, volume={8}, number={12}, pages={495-500}, year={2019}, doi={10.1587/comex.2019GCL0024} }