A disposable pant includes a garment shell including a stretchable material. The method includes calculating estimated gains of a filter and selecting an appropriate linear model for processing the output signals based on the input signals. The present invention provides a modified microorganism which produces an Lkt toxin, wherein said Lkt toxin is partially or fully inactivated. Different technologies are provided for locating and indicating item positions. The network can be a dense wavelength division multiplexing optical network.