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Card, SIM, eSIM and iSIM compared

High-level comparison of Keyra/Ciright form factors with honest evidence boundaries.

What is company-confirmed

The technology lineage extends from the physical Cyber One Card to SIM, eSIM and iSIM implementations for hardware-verified security. Public Keyra materials discuss SIM/eSIM signals and SIM as a trust-anchor theme.

What differs

Physical integration, provisioning, operator dependency and host access paths differ by form factor. A connectivity eSIM profile is not the same thing as a Keyra security applet.

What remains editorial

Detailed key generation location, export policy, challenge formats, algorithms and key sizes are not invented here. See the hardware verification matrix for cells marked editorial_task.

Hardware-verification matrix

Cells marked editorial task remain scoped work items — not invented equivalence.

Propertycardsimesimisim
Execution environmenteditorial_taskeditorial_taskeditorial_taskeditorial_task
Security app deploymenteditorial_taskeditorial_taskeditorial_taskeditorial_task
Key generationeditorial_taskeditorial_taskeditorial_taskeditorial_task
Key custodyeditorial_taskeditorial_taskeditorial_taskeditorial_task
Verification operationeditorial_taskeditorial_taskeditorial_taskeditorial_task
Compatibilityeditorial_task — do not claim universal device/carrier supporteditorial_task — do not claim universal device/carrier supporteditorial_task — do not claim universal device/carrier supporteditorial_task — do not claim universal device/carrier support
Recovery / revocationeditorial_taskeditorial_taskeditorial_taskeditorial_task
Evidence statuspartialpartialpartialpartial

Related answers

availableAvailableReviewed 5 Sept 2026

How does the physical Cyber One Card technology lineage extend to SIM, eSIM and iSIM implementations?

Joseph Callahan’s 5 September 2026 company declaration states Keyra builds on more than 15 years of Ciright Cyber One Card experience and that the technology now runs on SIM, eSIM and iSIM for hardware-verified security. The approved foundation wording presents this as an extension of the physical card lineage into integrated mobile form factors.

availableAvailableReviewed 5 Sept 2026

Is a connectivity eSIM the same as a Keyra security applet?

No. A connectivity eSIM profile provisions mobile subscription credentials for network access. A Keyra security application or applet is a distinct security workload for hardware-verified operations. They may share an eSIM platform in some architectures, but connectivity alone is not Keyra security.

availableAvailableReviewed 5 Sept 2026

How does the current iSIM implementation provide hardware-verified security?

Company declaration dated 5 September 2026 states the technology now runs on iSIM for hardware-verified security as part of the SIM/eSIM/iSIM set. iSIM integrates SIM functionality into a device secure processing environment. Detailed update control, key storage and verification encodings remain editorial tasks until engineering confirms them.

Card, SIM, eSIM and iSIM compared · Keyra FAQ