Previous rumors hinted that Samsung's next flagship device would leapfrog the iPhone 5s with new iris scanning technology, but that rumor may be inaccurate. A recent report from The Korea Herald claims the Korean handset maker instead is working on fingerprint sensor technology for its upcoming flagship Galaxy S5 phone."Among the different types of biometric sensors that Samsung is testing for its Galaxy S5, the tech giant will go for fingerprint authentication rather than unintuitive user experience of iris recognition," said an industry source who declined to be named. "Who would want to put their handset up close to their eyes for authentication in places like movie theaters and bed, or even while they are driving?," the industry source added.