How To Sign In With Your Device
Use the Safari profile flow to connect your iPhone, capture the UDID, and create a signing-ready device session without a password form.
Open Safari first
The device flow is designed for Safari. Open the login page on the exact iPhone you want to use for signing and installation.
Open the site in Safari, not a social-media browser.
Tap the login button to begin the device-profile flow.
Allow the profile download when iOS prompts for it.
Finish the profile install
After the temporary profile downloads, iOS moves the rest of the work into Settings. That install step is what lets the platform receive your UDID safely.
Open Settings and find the downloaded profile.
Install the profile and let the callback complete.
Return to the site after the redirect finishes.
What you get after login
Once the callback is complete, the platform stores a session for your device and can later attach certificate retrieval and signing actions to that same device context.