StrongKey is a cybersecurity company specializing in strong customer authentication, Public Key Infrastructure (PKI), and data protection. The company offers both software and hardware products designed to secure digital identities and sensitive data across enterprise, fintech, and manufacturing sectors. On the software side, StrongKey provides FIDO-based passwordless authentication (eliminating traditional passwords), PKI for key and certificate management, and tokenization and encryption capabilities for application-level data protection. Custom on-premises, cloud, and hybrid solutions are also available. Hardware offerings include the Tellaro T-Series (targeted at SMBs) and Tellaro E-Series (enterprise-grade), as well as hosted solutions managed by StrongKey. The company addresses compliance requirements including PSD2/Strong Customer Authentication (SCA), PCI DSS (card capture services), NACHA (deposit data protection), GDPR, and CCPA. Industry verticals served include fintech (payments and card capture), enterprise organizations, and manufacturing (IIoT integration and key injection). StrongKey operates an open-source development model, providing developer-friendly APIs, Swagger API documentation, and sample code for platforms including Linux, iOS, and Android via GitHub and SourceForge. Pricing follows a flat-fee model with no per-user or per-transaction fees. Customers listed on the website include AT&T, StubHub, SurveyMonkey, and PayU.