A reflective display device comprises a plurality of controllable light absorption layers arranged in a stack. Using information such as the previous locations of the mobile client device, a prediction is made of a future location of the client device. A transmittance filter, including a plurality of filter elements having a spatially varying pattern of transmittance, are arranged in a one-to-one mapping with respect to the pixels forming the image responsive element. The operator can then act directly on the symbols of the degrees of freedom to block or unblock them or indeed to manipulate the dummy in direct action. The fabric layer and the backing layer are molded integrally together to provide the outsole with increased slip resistance, quieter usage and increased shape retention.