Four major US carriers — AT&T, Sprint, T-Mobile, and Verizon — are joining forces to launch a single sign-on service for smartphones. The service, called Project Verify, authenticates app logins so that users don’t need to memorize passwords for all their apps. The companies say their solution verifies users through their phone number, phone account type, SIM card details, IP address, and account tenure. Essentially, your phone serves as the verification method with details that are hard to spoof.
Users have to manually grant apps permission to use Verify, and it works similarly to how you might log into some services through Gmail or Facebook instead of using a unique account password. Of course, these apps also have to choose to work…
