They also get unique identifiers for users. Yes the GUID is banned, but develope... | Hacker News

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		nwh on Dec 30, 2012 \| parent \| context \| favorite \| on: I don't want to download your app They also get unique identifiers for users. Yes the GUID is banned, but developers just use the devices MAC address instead.

Evbn on Dec 30, 2012 [–]

Google analytics gives unique ids.

nwh on Dec 30, 2012 | [–]

Until the cookies are cleared. MAC addresses are globally unique and completely unchangeable on iOS devices.

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