The iPhone 4S really sends raw audio data. Itﾂ痴 compressed using the Speex audio codec, which makes sense as itﾂ痴 a codec specifically tailored for VoIP.

The iPhone 4S sends identifiers everywhere. So if you want to use Siri on another device, you still need the identfier of at least one iPhone 4S. Of course weﾂ池e not publishing ours, but itﾂ痴 very easy to retrieve one using the tools weﾂ致e written. Of course Apple could blacklist an identifier, but as long as youﾂ池e keeping it for personal use, that should be allright!