Windows Software OTP Development

I need a Windows-based software OTP solution, primarily for user authentication via mobile app-generated OTPs.

Key points:
- Development should be exclusively for Windows platform
- The primary use of the software will be user authentication
- Users should generate OTPs through a mobile app

Ideal skills for this project include:
- Proficiency with Windows platform software development
- Experience with OTP systems and user authentication
- Mobile app development expertise to incorporate OTP generation

Please share your approach to this project, including a timeline and any relevant experience you have in this area.