A low-latency touch sensor is disclosed for use in connection with a touch surface having first and second conductors sensitive to changes in coupling therebetween as a result of touch (and/or near-touch). A signal generator generates unique orthogonal signals, a transmitter transmits the orthogonal signals on each of the first conductors. Receivers connected to the second conductors receive signals during a measurement period. The signals measured during the measurement period are processed to determine, for each measurement period, and for each of the second conductors, a signal strength corresponding to each of the unique orthogonal signals. The signal strengths can be used as a basis to determine touch events.