In certain embodiments, a method includes determining a position of an input within a touch-sensitive area of a touch sensor. The touch sensor includes a first number of electrodes having a first orientation and a second number of electrodes having a second orientation. The second orientation is different from the first orientation. The method also includes selecting a first set of the first number of electrodes and a first set of the second number of electrodes such that the determined position of the input is within an overlap of the first set of the first number of electrodes with the first set of the second number of electrodes. An area of the overlap is smaller than the touch-sensitive area.