As flashy as the iPhone 5s fingerprint scanner was, it was announced at a particularly bad time, with recent national security links eroding trust in Apple and other tech companies. Was Apple creating a de facto national fingerprint database? Would fingerprint security on a phone even make sense? To Bruce Schneier, the security world's public intellectual, it could be a fairly reasonable decision. "Fingerprint authentication is a good balance between convenience and security for a mobile device," he says in a piece for Wired written before the announcement. Which, of course, doesn't mean it couldn't be hacked — through possible methods he lays out. And as for the database, how worried you are will have to depend on how much you trust Apple.