Displays a text input prompt on the terminal for the customer or clerk to enter free-form data (e.g., table number, PO reference). Returns the entered string in the response.

Usage:

• Provide register.
• Optional title customizes terminal screen header.

Considerations: Length and character restrictions depend on device; keep alphanumeric to ensure compatibility. Provide client-side validation if a specific format is needed.

Security: ApiKeyAuth or EphemeralAuth.

Errors: Cancelled entry, timeout, unsupported character input.