I assume this is about Windows. Here is my recommendation:
- Get a fingerprint sensor.
- Activate Windows Hello for the Windows account
- Install the desktop version of Bitwarden.
- Go to File → Settings and activate:
- Unlock with PIN (for phone support in case the sensor has an issue)
- Unlock with Windows Hello
- Start To Tray Icon
- Start automatically to login
- Follow the steps mentioned here
Done!
So when the computer starts the user will have to follow these steps:
- Use fingerprint sensor to log into Windows
- Use fingerprint sensor to unlock the (hidden minimized) Bitwarden desktop app
- Start Google Chrome (can be automated)
- Click onto the Bitwarden extension
- Click Unlock with Biometrics (there unfortunately is no option to use this automatically on browser start or after clicking the icon)
- Use fingerprint sensor to unlock the Bitwarden extension
The bold lines show processes that will be initiated automatically.
P.S.: Never underestimate a senior citizen. For details take a look here.