swIDch

swIDch is the UK-based commercialization arm of OTAC (One-Time Authentication Code), a dynamic authentication protocol originally developed by its Korean parent company, SSenStone. Where SSenStone has concentrated its own direct deployments in Korean critical infrastructure and manufacturing, swIDch’s role is to license and adapt the same core OTAC technology for financial services, IoT device authentication, and industrial/OT systems in international markets, primarily through partnerships and an Auth SDK that integrates FIDO-certified biometric authentication, mobile one-time-password (mOTP) authentication, and OTAC login into client applications.

The technical proposition is the same as SSenStone’s: a single dynamic code that both identifies and authenticates in one step, generated without a live network connection and without leaving reusable key material stored anywhere, which OTAC-Holderless Card and OTAC Dynamic Token products apply to card-present and card-not-present payment authentication scenarios respectively. swIDch states its technology has been provided to more than 50 clients, though as with most authentication vendors that figure is company-disclosed rather than independently audited.

swIDch is a small company (roughly 9 employees per recent data) with about $3.5M in disclosed funding, considerably smaller in headcount and funding than its Korean parent. Because SSenStone and swIDch share the same core OTAC intellectual property, buyers evaluating either company should understand they are evaluating variations of the same underlying authentication technology deployed through different regional go-to-market structures rather than two independently developed products.