Google on Monday began rolling out a new two-step authentication feature, Google Prompt, targeting enterprise employees. The new option consists of a pop-up that displays a mobile user's name and profile image, and that specifies the location and device involved in the attempted sign-in. The device owner is asked whether to allow or deny the sign-in. Enterprise end users still have other choices for two-step authentication. They can use a Google Security Key or enter a verification code sent to their phone.