Reading 25: User identification using pressure and tilt data

Citation:

Eoff, Brian David, and Tracy Hammond. "Who dotted that'i'?: context free user differentiation through pressure and tilt pen data." Proceedings of Graphics Interface 2009. Canadian Information Processing Society, 2009.

 

Summary;

Along with the usual parameters used in understanding a sketch, this paper reviews other information that can be used to unique identify a sketcher. This paper investigates how the physical mechanics of a pen alone including pressure, tilt and speed can be used to unique identify a user. Some of the major use cases for such a system include forensics, identify personal traits to build trends for education, and also for collaboration on online whiteboards.

 

Discussion:

The data is collected in Cintiq, which provides values for tilt and pressure.  This application records the following information about the users strokes, the coordinates, at what time the pen was in contact with the surface, at what angle and using how much pressure.

 

2 experiments were performed:

Exp1:To determine how consistent a user is in the drawing.

Exp2: To determine if we can build a classifier to find the creator of a sketch