Excellent article @camb. Eavesdropping and 'sniffing' during transmission has been a problem for privacy till now.

The new tech is making use of the curious, and sometimes incredible, laws established by quantum theory and I expect this enquiry into the properties of photons, and how they change permanently under stimulation of any kind, to be investigated further.

Maybe one day this will be ported into our computer networks, as now the limitation of distance is dictated by the attenuation seen in fiber optic networks.