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Identity verification platform with cryptographic challenge-response auth, WebAuthn passkeys, device trust registry, 6-signal fraud detection, and geospatial binding. Less than ten seconds from scan to session. Authenticate via QR codes, passkeys, or both. Node.js and Python SDKs. Drop-in Web Components for login, 2FA, and ephemeral access. Post-quantum ready.
What it does:
QRAuth is a drop-in, cryptographically secure identity verification platform that lets users log in (or verify any action) by simply scanning a QR code with their phone. No passwords, no magic links, no SMS codes, no app install required.
It works alongside your existing auth stack (Auth0, Clerk, Firebase, Supabase, etc.) or as a standalone solution. Every QR is cryptographically signed (ECDSA-P256 + post-quantum SLH-DSA), animated ("Living Codes" that rotate every 500 ms to kill screenshots), bound to the exact session, and includes proximity proof so you know the user was physically there. It also adds device trust scoring, 6-signal fraud detection, ephemeral guest access, and full WebAuthn passkey support under one unified identity model.
Who it's for:
Developers and product teams who hate auth friction and want passwordless login in <10 minutes.
Anyone using QR codes in the real world (parking, events, hotels, kiosks, payments, ticketing) who needs to stop sticker fraud and fake scans.
Teams building shared-device experiences (kiosks, TVs, public terminals) or high-security flows where phishing and replay attacks are unacceptable.
If you ship QR codes today, digital or physical, QRAuth makes them tamper-proof and instantly verifiable.
Why we built it:
Passwords are broken. Magic links are slow and phishable. SMS is SIM-swappable. Passkeys are amazing but don’t work everywhere (shared devices, kiosks, physical products). We started with the physical world problem: fake QR stickers on parking meters and payment terminals were costing businesses millions. The same primitive that makes physical QR codes verifiable turned out to be the cleanest passwordless login method ever, phishing-resistant, works on any phone, and feels magical.
We open-sourced the core (BSL → Apache after 4 years) because we believe authentication infrastructure should be transparent and composable, not another black-box vendor lock-in.
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About QRAuth on Product Hunt
“Open Source, Identity Verification Platform”
QRAuth was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #124 on the daily leaderboard. Identity verification platform with cryptographic challenge-response auth, WebAuthn passkeys, device trust registry, 6-signal fraud detection, and geospatial binding. Less than ten seconds from scan to session. Authenticate via QR codes, passkeys, or both. Node.js and Python SDKs. Drop-in Web Components for login, 2FA, and ephemeral access. Post-quantum ready.
QRAuth was featured in API (98.1k followers), Developer Tools (512.4k followers), GitHub (41.2k followers) and Security (2.6k followers) on Product Hunt. Together, these topics include over 103.7k products, making this a competitive space to launch in.
Who hunted QRAuth?
QRAuth was hunted by Gernard Cerma. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how QRAuth stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Gernard Cerma