Originally announced as “Project Verify” in 2018, ZenKey was meant to be a single sign-on system, similar to the sign in with Google or Apple buttons that you see on various websites. The idea was that each carrier would offer an app that could verify your identity, then act as a pass whenever you went to log into a supported website or carry out something like a bank transfer. In theory, it could be more secure because it used data from your SIM card and location to make sure it was…