For this Correos project that involves 25,000 MC70s, the integrator (IECISA) has proposed to Correos to use a "single sign-on" application, i.e that both application and supplicant use the same credentials. The user should only type them once, and then the application should forward them to Fusion. This is a way to make sure both match. Correos liked it very much.
No current or future APIs seem to do this.
We suggested to invoke Wireless Login (as hidden) and send it the credentials via Windows messages, as a work-around, but they did not like this at all.
I wonder if Wireless Login could accept command line arguments. This would do too.
By the way, this integrator claims that Psion and Intermec can do. It's maybe true. They are also offering them to Correos.
Latest news: Yes, Intermec can, since they use Odyssey's APIs which allow it.