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Feb 16, 2018 at 20:33 comment added Evils It's really using the 802.11v standard that introduce time of flight stamps. As mentioned by patrickS, the networkingnerd article points that out nicely
Oct 21, 2016 at 5:59 comment added patrickS Also a nice article: networkingnerd.net/2016/09/21/…
Oct 21, 2016 at 5:56 vote accept patrickS
Oct 4, 2016 at 13:10 history edited jksoegaard CC BY-SA 3.0
Clarify that only the Mac needs to support 802.11ac WiFi.
Oct 4, 2016 at 13:09 comment added jksoegaard @IronCraftMan That's right - but the Mac that sends the signal needs to have 802.11ac for this to work. The watch that is just receiving the signal does not need to support 802.11ac.
Oct 4, 2016 at 13:07 comment added jksoegaard You can hear Phil Schiller/Craigh Federighi explain the implementation here: vimeo.com/171186055#t=40m15s
Oct 4, 2016 at 12:49 comment added patrickS Does apple provide any official docs?
Oct 4, 2016 at 12:23 comment added At0micMutex The first-generation Apple Watch does not have 802.11ac.
Oct 4, 2016 at 11:11 comment added bmike The timing packets are likely encrypted as well or at least the time stamps are encrypted to prevent playback attacks where someone captures the traffic that unlocked the Mac today at 8 am and then tries to replay it tomorrow when you and your watch are not present.
Oct 4, 2016 at 10:27 history answered jksoegaard CC BY-SA 3.0