Blog
Insights & updates
Engineering deep-dives, compliance guides, and product updates from the Stile team.
How California's New Driver's License Digital Signature Works
This piece breaks down the cryptographic mechanism behind California's new driver's license and ID card security feature, for an engineering and compliance audience evaluating identity verification infrastructure.
When Identity Verification Creates More Risk
A driver said no to a broker's identity verification request for a selfie, truck records, and a CDL. Both sides saw a different kind of danger.
Do Digital IDs Track You? The mDL "Phone Home" Problem, Explained
Do digital IDs track you? Learn how device retrieval, server retrieval, selective disclosure, and retention shape mobile driver's license privacy.
Age Verification Without ID Uploads: How Private Age Checks Actually Work
New laws require age checks, but businesses do not need to collect ID scans. See how mDLs, zero-knowledge proofs, and facial estimation can verify age while minimizing personal data.
Developers Guide to Age Verification: Build vs. Buy
A practical developer guide to age verification build vs buy decisions, covering compliance drift, PII exposure, fallback methods, trust management, and when in-house infrastructure makes sense.
Why Age Verification is Broken (And How to Fix It)
Most age verification systems either collect too much data or are trivially easy to bypass. Here's how a privacy-first approach solves both problems without storing a single date of birth.
What is OpenID4VP and Why Should You Care?
OpenID for Verifiable Presentations lets users prove identity claims from their digital wallet in under a second. Here is how it works and why it matters.
Getting Started with stile: A 5-Minute Integration Guide
From zero to compliant in under 5 minutes. Learn how to add identity verification to your app with a single script tag.
Privacy-First Verification: Why We Never Store PII
How stile's eligibility signal architecture eliminates data liability while keeping you compliant across 190+ jurisdictions.