Dear Harald,

Thanks for the answer.

> that is true, and has been very clear from the very beginning of the
> eSIM universe.  It's a *MASSIVE* shift of control from "whoever is
> technically capaable to issue a chip card with an UICC/USIM profile on
> it" to a single, cerntralized entity of control.  It's one of my main
> criticisms of this scheme.

No doubt, this is terrible. And I am not even sure how soon we will
see the increase of UEs that has not physical SIM slots at all...

> The eUICC specifications explicitly permit multiple roots of trust, and
> I have personally successfully created such eUICCs.
>
> It's just that the eUICCs don't offer anyone the addition of such roots
> of trust except [even that optionally] the EUM (eUICC manufacturer).

Yeah, this would be a solution if I want to build my own UEs and can
embed an EUM eUICC, so I can upload my own certs, then I could use my
own SM-DP+ and eSIM profiles. Not really an option for private network
operators with commercial UEs at play unfortunately.

> sysmocom does not have any plans to operate a GSMA-accredited SM-DP+
> itself.  However, we do work with partners who do and we are able to
> issue GSMA-signed eSIM profiles.  If I wouldn't be constantly distracted
> by other tasks, we would also have completed the development of a
> web-based platform where customers can personalize such profiles - sadly
> that is still WIP at this point.  But we can do it manually, if you have
> a UPP that you'd want to get signed.

Shall I reach out to you in private to further discuss this?

Regards,
Csaba

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