#$%^&*AU2018271228A120181213.pdf#####ABSTRACT The invention provides a method of measuring an activity of a person or an object on a flexible mat of a trampoline. The method comprises determining a mat 5 deformation signal based at least partly on measurements from a sensor arrangement, the sensor arrangement comprising at least one sensor and defining a coordinate space for the mat, the or each sensor being configured to measure a value corresponding to a deformation of the mat as the person or object moves on the mat, wherein, when the person or object is on the mat, the value measured by 10 the sensor or one of the sensors corresponds to a proximity of the person or object to the sensor; determining a bounce coordinate in the coordinate space based at least partly on the mat deformation signal; and determining a bounce location of the person or object on the mat based at least partly on the bounce coordinate in the coordinate space. The invention further provides a trampoline configured to 15 indicate activity of a person or object on the mat and interactive apparatus that includes the trampoline.co 1/18 111 C) CDo CC CD CD
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