ZeroTouch (ZT) is a unique optical sensing technique and architecture that allows precision
sensing of hands, fingers, and other objects within a constrained 2-dimensional plane …

Let Ω be a disk of radius R in the plane. A set F of unit disks contained in Ω forms a maximal
packing if the unit disks are pairwise interior-disjoint and the set is maximal, ie, it is not …

Given a rectangle with emitters and receivers on its perimeter, one can detect objects in it by
determining which of the line segments between emitters and receivers are blocked by …

Given a set of n non-overlapping unit disks in the plane, a line l is called blocked if it
intersects at least one of the disks and a point p is called a shadow point if all lines …

We consider the problem of blocking all rays emanating from a unit disk U by a minimum
number Nd of unit disks in the two-dimensional space, where each disk has at least a …

In this paper, the authors solve an illumination problem for maximal unit disk packings. Let Ω
be a disk of radius R in the plane. A set F of unit disks contained in Ω forms a maximal …

Let Ω be a disk of radius R in the plane. A set F of closed unit disks contained in Ω forms a
maximal packing if the unit disks are pairwise disjoint and the set is maximal: ie, it is not …

We consider the problem of blocking all rays emanating from a closed unit disk with a
minimum number of closed unit disks in the two-dimensional space, where the minimum …