Wireless use along the US-Canada border can be problematic: when there isn't direct interference, there's sometimes a fight over which devices get dibs on given frequencies. Don't worry that the countries will rekindle their old disputes, though -- instead, they've just struck interim deals to share more of their spectrum. Along with harmonizing 700MHz public safety networks, the pacts address AWS (1,700MHz and 2,100MHz), PCS (1,900MHz), 3.7GHz wireless broadband, mesh networks and even WiFi hotspots. When possible, both sides will use contention protocols to automatically resolve any conflicts. While the deals aren't yet final, they should be strong enough to maintain some semblance of peace on the northern airwaves.