Linked by Howard Fosdick on Mon 21st Nov 2011 07:48 UTC
Google Last June, CNET disclosed that Google collects and publishes the estimated locations of millions of phones, laptops, and other Wi-Fi devices. All without their owner's knowledge or permission. Google has finally announced how to exclude your home network from this database. Simply append "_nomap" to its name. Details over at CNET. Left unsaid is why the burden is placed on millions of individuals to opt-out, instead of on perpetrator Google.
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RE[3]: Comment by clhodapp
by Alfman on Mon 21st Nov 2011 22:32 UTC in reply to "RE[2]: Comment by clhodapp"
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"In practice MAC addresses are not unique (and don't actually have to be)."

I really would like to know what you mean here, because in practice having duplicate MAC addresses will break things like DHCP and switching hubs which rely on a MAC address's uniqueness.

Sometime adapters make it possible to spoof MAC addresses and do ARP spoofing - which can even have legitimate uses like automatic failover, but then original host will stop receiving packets.

"Probably not because it would have been impossible or at least not practically feasible. How would your devices locate each other without a unique, visible address?"

(Didn't you just say it doesn't need to be unique?)

I'm not here to re-engineer it, but the unique id doesn't need to be static between sessions, it just needs to be unique per AP at any given time.

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