I have a smartphone and/or tablet. Is there a way to authenticate besides a push request, phone call, or text message?

Yes, you can enter a code generated by the Duo Mobile app.

When you are at the MFA authentication screen, click Other Options.

Duo push screen with Other Options link.

On the next screen, click Duo Mobile passcode.

Duo screen showing other options to login, Duo Mobile passcodes is outlined in red.

Open the Duo Mobile app on your smartphone or tablet.

Depending on your version of the Duo Mobile app, you will either tap on the green key icon or down arrow icon next to University of Hawaii.

tap the green key button
tap the down arrow icon

A code will display. This code will remain valid until it is used. In the current version of the Duo Mobile app, you can tap the "circular arrows" icon to get a new code.

Passcode is displayed. Use circular arrows to get a new code.

Enter the displayed code into the box, then click on Login.

Duo screen to enter your passcode. The passcode text box and verify button are outlined in red.