Two-step login, powered by Duo, protects your OSU account by verifying your identity with two forms of ID:
By protecting your OSU account with Duo, you can reduce the risk of someone gaining access to your account. If someone has access to your OSU account, they could:
The Duo Mobile app for iOS and Android is the most popular option for authenticating with Duo. We also support hardware tokens, security keys and even Touch ID on some MacBook laptops.