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Channel selection observation
If a 3DS receives another device's probe request and has not yet tagged that device in an arbitrary amount of time (~12 hours), the receiving 3DS will response with a Probe Response frame. The destination MAC address is the StreetPass MAC address of the 3DS that was transmitting the probe request, while the receiving device sets its StreetPass MAC address as the source address. This is important to note because further exchanges may cease using destination and or source addresses.
If a 3DS receives another device's probe request and has not yet tagged that device in an arbitrary amount of time (~12 hours), the receiving 3DS will response with a Probe Response frame. The destination MAC address is the StreetPass MAC address of the 3DS that was transmitting the probe request, while the receiving device sets its StreetPass MAC address as the source address. This is important to note because further exchanges may cease using destination and or source addresses.
In the probe response, the 3DS appears to offer a channel of 1, 6, or 11. Different channels have been seen offered between the same set of 3DS for each StreetPass. Offered channels, and channel range most likely varies by region.
== StreetPass Spoofing ==
== StreetPass Spoofing ==