Protect Your Officers.
Verify Your Presence.
Eliminate impersonation risks and build community trust with the only cryptographic pre-arrival identity system for law enforcement. Simple as a doorbell sticker. Secure as a bank card.
The Growing Threat of Impersonation
Criminals are increasingly using police uniforms and fake badges to gain entry into homes. A physical badge costs under $15 to replicate. This erodes public trust and puts officers at risk during legitimate operations.
Officer Safety Risk
When residents can't verify an officer's identity, hesitation and fear escalate, increasing the likelihood of dangerous confrontations at the threshold.
Community Trust Erosion
Every impersonation incident makes the public less cooperative and more suspicious of legitimate law enforcement presence. VerifiedKnock rebuilds that trust cryptographically.
How VerifiedKnock Works
Three components. One cryptographic handshake. No internet required.
Officer Authenticates
The officer presses their thumb on the ATKey.Card biometric sensor. Match-on-card fingerprint verification happens entirely on the chip — the fingerprint template never leaves the card. No PIN, no phone unlock, no network connection needed.
Card Taps NFC Sticker
The officer taps the ATKey.Card to the NTAG424 DNA sticker on the door frame. The sticker generates a unique cryptographic challenge-response using Secure Dynamic Messaging — a new code every tap, impossible to clone or replay.
Resident Receives Verified Alert
The resident's phone shows a full-screen notification: department name, reason for visit, dispatch reference number, and verified timestamp. No officer name, no badge photo — respecting union privacy requirements while proving authority.
FIDO2 certified biometric smart card with on-card fingerprint sensor. The private key is generated on-chip and never exported. Works with or without a smartphone. Issued and managed by your agency's HR admin portal — enroll, revoke, and audit in real time.
Why Agencies & Unions Choose VerifiedKnock
A proactive safety layer that confirms authority before any interaction — protecting both the officer and the resident.
Cryptographically Unforgeable
FIDO2 private keys never leave the chip. The NTAG424 sticker generates a new cryptographic code every tap. No badge, QR code, or screenshot can replicate this.
Instant Revocation
Agency HR admins can revoke a credential in seconds from the web portal. A terminated or suspended officer's card stops working immediately — no card retrieval required.
Zero Infrastructure Burden
No CAD integration required. No hardware at the station. The agency portal is a web app — enroll officers from any browser. The sticker goes on the door frame. That's it.
Built for Unions. Designed for Privacy.
VerifiedKnock is an outbound-only verification system. Officers prove their authority — the system does not track, monitor, or log their movements.
No GPS Tracking
VerifiedKnock does not track officer location in real-time. Verification is event-based — it confirms presence at a specific address at a specific moment, not a continuous location feed.
No Officer PII Transmitted
The resident notification contains department name, reason for visit, dispatch reference, and timestamp — not the officer's name, badge number, or photo. Union privacy requirements are met by design.
Outbound-Only Trust
Data flows from the officer to the resident to confirm authority — never the other way. The system is designed to prove presence, not monitor activity.
Biometrics Stay on the Card
The officer's fingerprint template is enrolled and stored on the ATKey.Card chip only. It is never uploaded to a server, never accessible to the agency, and never transmitted during verification.
No Smartphone?
No Problem.
For seniors and households without smartphones, VerifiedKnock offers the VerifiedAmbient™ Dedicated Reader — a wall-mounted NFC device that installs beside the door like a light switch.
When an officer taps their FIDO2 credential card to the reader, the device verifies cryptographically and signals the home — turning ambient lights green for verified, red for unverified. No app. No Wi-Fi. No screen to read.
Wall-Mounted NFC Reader
Installs beside the door. No drilling, no wiring. Powered by USB-C or battery.
Ambient Light Signal
Integrates with smart bulbs (SmartThings, Philips Hue) — green means verified, red means stop.
Same FIDO2 Security
Identical cryptographic verification as the mobile app — no compromise on security for seniors.
Equip Your Department with VerifiedKnock
Join the pilot program for law enforcement agencies. Enhance officer safety, rebuild community trust, and deploy in days — not months.