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A comment on 3-D printed plastic objects that can communicate with WiFi devices. Parent comment

Re:3-D printed plastic objects that can communicate with WiF... by whichfawkes on Wednesday December 06, 2017 @10:48AM (#15861959)
They can't query it, they have to be listening when it broadcasts.
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Re:3-D printed plastic objects that can communicate with WiF... by worldsayshi on Wednesday December 06, 2017 @11:01AM (#15862086)
Yeah ok I understand that it doesn't have a memory. But you can still sort of "query" the current state of a device that is always broadcasting, like a flow or speed sensor.
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Re:3-D printed plastic objects that can communicate with WiF... by regularfry on Wednesday December 06, 2017 @12:20PM (#15862858)
The router's probably pinging beacon frames out several times a second anyway. There's a lot of 2.4GHz traffic a passive listener could use.
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