No, you do not need a mobile device to verify your identity in person. All you need is access to the Internet, such as a computer at a public library or community center, to set up your In-Person Verification appointment and access your Registration Code.
After you've finished setting up your IPV appointment, follow the instructions sent to you in the appointment confirmation email. This email contains your QR Code and 25-character Registration Code, which you can print or write down if you do not have a mobile device. Make sure to bring this information with you to your appointment.
Set up Multi-Factor Authentication (MFA) without a Mobile Device
To set up MFA without a mobile device, select Backup Codes. This will generate 12 one-time-use codes that you can use for MFA. Make sure to safe-keep these codes and do not share them with anyone else.