Experiment 3 (Mixed writing-tool scenario): System performance results (EER in %) when the local proposed systems are trained and tested using signatures from the same device but different writing tools (i.e. stylus and finger).

Skilled and random forgeries results are shown on top and bottom of each cell respectively.各单元格的顶部与底部分别展示专业伪造（skilled forgeries）与随机伪造（random forgeries）的结果。