Ahead of traveling, plan ahead and enroll in additional Duo options if needed before your trip. For example:
No cellular or WiFi service? Use the Duo Mobile app to generate passcodes.
Wireless Plans? Check with your cellular provider to verify that your phone is operable overseas.
Do you use multiple SIM cards? Enroll the phone number associated with each one in Duo.
Duo Option
App Notification
App Passcodes
Text Passcodes
Phone Call
Description
Duo sends a login request to your device. Press Approve to log in.
Generate a passcode with the Duo app
Get 10 single-use passcodes via text message that is good for 30 days
Duo calls your phone. Press any key.
Type of Device
Smartphone, tablet, or paired smartwatch
Smartphone, tablet, or paired Apple Watch
Phone with text message
All phones
Data Usage
Each notification is only 2KB of data
No connectivity needed
A single text message.
A single phone call
Requires Connection
Yes: cellular data or WiFi
No
Yes: cellular
Yes: cellular or landline
Questions or concerns? Please contact the UNIT Help Desk or (USA area code +1) 610-519-7777.