A method is provided for enhanced spread spectrum watermarking. The system is also suitable for pipe systems for ducting cables and for carrying all types of gaseous and liquid media. Once the identifier values are determined, the values are stored in an allocation table and marked as \u2018in-use\u2019 to ensure that these identifier values are not allocated to any of the secondary overlay streams. Accordingly the MISR may be scaled down in input width by a reduction factor of the shift register. The circuit board is operable to condition the signal into a human-comprehensible form.