iPhoneとか海外携帯のデバイス固有ID
海外だと、Anonymous Subscriber ID (ASID)って言うのかね?
iPhone SDK: Retrieving MSISDN or SIM ID for Authentication (iPhone forum at JavaRanch)
NSString *uniqueID = [[UIDevice currentDevice] uniqueIdentifier]
あとで読む
ASID Mobile WebSite Developers Cookbook
日本のは