Drawing on a touchscreen

A non-transitory machine-readable storage medium comprising instructions that, when executed by one or more processors of a machine with a touchscreen, cause the machine to perform operations comprising:

• detecting a set of locations at which a guide device in contact with a touchscreen triggered a set of contact signals on the touchscreen;
• determining a position of the guide device on the touchscreen and an orientation of the guide device on the touchscreen by determining a longitudinal axis of the guide device based on the detected set of locations on the touchscreen;
• and
• displaying a line on the touchscreen parallel to the longitudinal axis determined based on the determined position and orientation of the guide device on the touchscreen.

A system comprising:

• a touchscreen;
• a touch module configured to detect a set of locations at which a guide device in contact with a touchscreen triggered a set of contact signals on the touchscreen;
• a processor configured by an analysis module to determine a position of the guide device on the touchscreen and an orientation of the guide device on the touchscreen by determining a longitudinal axis of the guide device based on the detected set of locations on the touchscreen;
• and
• an output module configured to display a line on the touchscreen parallel to the longitudinal axis determined based on the determined position and orientation of the guide device on the touchscreen.