Could someone build this into DD-WRT or Tomato and then build this on top of WIFI / WLAN? In a built-up conurbation, you have a high concentration of WIFI route

Could someone build this into DD-WRT or Tomato and then build this on top of WIFI / WLAN? In a built-up conurbation, you have a high concentration of WIFI routers that have a short range but with such a large concentration, maybe it doesn't matter?