The story, "New system secures cellphones for Web transactions," posted to the wire Tuesday, incorrectly identified Srikar Sagi in the second paragraph. Sagi is the author of PAL and a security researcher. The second paragraph has been changed and now reads:

Called password less authentication (PLA), the scheme gathers authentication data over the Internet as well as carrier cellular networks and ties them together to positively identify the person trying to log in to an account, according to the author of PAL, Srikar Sagi, a security researcher.