"equipped ... to intercept the information"

=> Question is : is it illegal ?
- if not, nobody has any right to stop collecting the data.
- if not, nobody has any right to stop aggregating the data.
- if not, nobody can stop anyone from developing and distributing the software.

It's a non-problem, because it's NOT illegal, afaik.

I'm using a pcengines' alix 2D3 as a dedicated firewall / router and AP (with a mini-pci athereos card with 2 antennas).

Runs debian, very stable and with an external USB 1TB drive, acts as webserver/fileserver and all.

Draws a merely 3-to-10W depending on the wireless/disk/cpu activity.