One embodiment of a capacitive sensor array comprises a plurality of row sensor elements including a first row sensor element, a plurality of column sensor elements including a first column sensor element, and a plurality of unit cells, wherein a first unit cell contains an intersection between the first row sensor element and the first column sensor element, and wherein a ratio between 1) a boundary length between the first row sensor element and the first column sensor element within the first unit cell and 2) a perimeter of the first unit cell is greater than √{square root over (2)}/2.