How will it tell the difference between a user running and a thief's movements?
Exactly the question I had. If you were going to steal something, wouldn't you want to make it look like it was yours? I don't see how any accelerometer would help in this case. It sounds like it would cause more false alarms than anything. The problem is usually the theives are smarter than the makers most of the time; these security systems are all based around a set of conditions that must be met before the alarm goes off... once you know these conditions you can generally beat the system. It sounds like AppleInsider is trying to drum up news on a slow news day... we all know patenting doesn't mean a whole lot these days...
The only way this would ever work is biometrics of some sort... you're always touching the scroll wheel (or trackpad)... why not use a fingerprint reader somewhere?
So if it gets stolen you will know who stole it (based on their ip)
Not really a security feature imo. Most IPs can easily be spoofed by public gateways. Even if you did manage to get the IP address, it may be days before police are able to do an investigation... provided they do it at all. An IP address usually isn't enough probable cause for a search unless the thief is caught in the act.