SIM Registration
Also called SIM Card Registration, Subscriber Registration, Mandatory SIM Registration
SIM registration is the regulatory requirement, in force in most countries, that a mobile subscriber's verified identity be tied to a SIM card before it can be activated. The stated rationale is almost always the same across markets: anonymous, unregistered connections are the fraud and abuse vector the rule exists to close, whether the concern is scam calls, financial fraud enabled by anonymous SMS OTP interception, or law-enforcement's ability to trace a number back to a person. In practice this usually means a telecom dealer or store clerk checks a government ID at the point of sale, records the subscriber's details, and links that record to the SIM's identifiers before service activates.
The mechanics vary by country: which ID document is acceptable, whether the operator checks it against a government database (as several markets, including Türkiye's e-Devlet-linked flow, require) or simply records it, and what the penalty is for an operator that skips the step. What's consistent is the underlying shape: identity must be captured and bound to the connection before activation, not after.
Who actually built this
No single body invented SIM registration, it's a regulatory pattern adopted country by country, not a standard drafted once. GSMA, the mobile-operator trade body, has published research tracking mandatory prepaid-SIM registration laws across a large majority of the world's countries, useful as category-level evidence of how widespread the pattern is, not as a single legal source for any one country's rule. Türkiye's specific regime sits under BTK, the telecom regulator, operating within the broader Electronic Communications Law (No. 5809, 2008): the precise secondary regulation governing point-of-sale identity capture is not something Solidus's own research has confirmed to citation-level detail, and should be checked before it's stated to a customer as a specific legal requirement. Türkiye's major operators (Türk Telekom, Turkcell, Vodafone TR, Netgsm) and MVNOs already run their own compliant registration flows today, built without any Solidus involvement.
The pain, precisely
The gap Solidus's vertical strategy targets is not "SIM registration doesn't happen": it does, reliably, at every Turkish carrier. The gap is that the same subscriber's already-verified identity is re-captured from scratch at every additional touchpoint: a second line, a dealer-counter plan change, a corporate eSIM provisioning step. Each re-capture also means a fresh photocopied or photographed ID sitting somewhere in a dealer's records: a document-retention liability layered on top of the repeated friction, the same pattern that shows up in hotel guest registration (see KBS).
Solidus today
Nothing here is built. Solidus Verify's general identity-verification pipeline is live on testnet, but no code connects it to any telecom operator's activation system, dealer-software platform, or MVNO. No operator is a customer; no pilot exists. The proposed value, read the ID once, register the required fields, and issue the subscriber a reusable credential instead of re-capturing at every touchpoint, is a commercial thesis in Solidus's internal materials, not a deployed capability.
See also
eSIM Activation is the closely related technical process this requirement is often bundled with, but is a distinct standard governed by a different body (GSMA, not a telecom regulator). KYC and IDV are the general techniques a compliant registration flow draws on. Credential Portability is the reuse concept behind Solidus's interest in this vertical.
Where it comes from
Someone else specified this. Solidus assembles it.
Mandatory SIM registration, requiring a telecom subscriber to prove their identity before a SIM card is activated, is a near-universal regulatory pattern that GSMA (the mobile-operator industry body) has tracked across a large majority of the world's countries for over a decade, almost always justified on anti-fraud, lawful-intercept, or counter-terrorism grounds. Türkiye's version is enforced by BTK (Bilgi Teknolojileri ve İletişim Kurumu, the Information and Communication Technologies Authority) under the framework of the Elektronik Haberleşme Kanunu (Electronic Communications Law, No. 5809, 2008); the exact secondary regulation and clause governing point-of-sale identity capture should be confirmed before it's cited to a specific customer, as regulatory detail below the statute level shifts and our internal research has not pinned down the precise implementing regulation. Turkish operators, Türk Telekom, Turkcell, Vodafone TR, Netgsm, already run their own one-shot ID-scan-plus-e-Devlet check at signup, as regulators require. Solidus wrote none of this law and built none of these operators' existing compliance systems.
How to check this
Solidus has not built this. The entry explains the concept.
None. No SIM activation has ever been fed by a Solidus-issued credential, live or in test.