Researchers at the University of California, Santa Barbara, have developed a novel method for imaging objects beyond the line of sight, which they've named "Wiffract." This technique...
  • AlecSadler@sh.itjust.works
    0·
    1 year ago

    Are there ways to design a room or things to put in a room (or the walls?) that would inhibit this ability?

    I suppose lead shields or something…

    • fishos@lemmy.world
      01·
      1 year ago

      Well, if it’s using WiFi, then anything you do will also kill your WiFi signal. So, bare minimum, no WiFi router, only LAN lines.

  • Wussy@lemmy.world
    0·
    1 year ago

    And here I am thinking that hanging my passwords on the wall as art was hack proof. I guess it’s time to redecorate.

    • Hamartiogonic@sopuli.xyz
      0·
      1 year ago

      You just need to write it smaller than the Wi-Fi wavelength (about 60 nm) and you should be fine. If someone wants to read it, they have to use smaller wavelengths (i.e. higher frequencies), which means there’s a good chance that they will be blocked by your walls.

      Edit: c/2.4 GHz ≈ 125 mm I took the first value from Wikipedia, without thinking about it enough.

      • crapwittyname@lemm.ee
        0·
        1 year ago

        I think your fag packet calculation has got a power of ten wrong somewhere. Wi-fi is GHz so that would be on the order of centimetres I think.

        • Turun@feddit.de
          0·
          1 year ago

          Yes. Wifi is 2.4 GHz, speed of light is 0.3 Gm/s. Therefore one wavelength is 0.3/2.4 m/s/Hz = 12.5 cm