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With a YubiKey, you store the authentication credentials on the key itself. This does not require WiFi or cell service make them a great option for international travel. Phone and text message may incur fees, depending on your cell phone plan.Ī key-fob hardware token displays passcodes. Passcodes, however, do not require any WiFi or cell service which make them a great option for international travel. Push notifications, phone calls and text messages require that the phone has a signal. Here are the different types of devices you can use:Ī smartphone allows you to use "push" notifications, passcodes, phone calls or text messages. This will keep you productive if any one device is unavailable.

We suggest you select two or more devices. When you need to access important data at ASU, you will be asked to verify who are by sending a signal to a device you own.