In a computerized method for adherence to physical restrictions in the
construction of an ITE hearing aid, each component to be placed in the
shell of the hearing aid has a collision plot associated therewith. The
collision plot is generated as a scatter plot by measurement and
simulation, and represents the physical extent of the influence of a
particular property of the component on other components. When virtual
representations of the respective components are moved relative to
another in the e-detailing software for determining the physical
positions of the components in the ITE hearing aid, the collision plot
for a given component is visually displayed, so that it can easily be
seen when another component invades that collision plot, thereby
representing an unacceptably close relative position of the two
components.