Yeah, let's throw out the entire idea, because it is not perfect. Spoofing is the main problem here. If that was blocked the $20 disposable phone would be much

Yeah, let's throw out the entire idea, because it is not perfect. Spoofing is the main problem here. If that was blocked the $20 disposable phone would be much harder and more expensive to exploit (his many disposable phones they would have to use to perform a single successful campaign?