VerifiedKnock
EVV Compliance Center
Federal Compliance · 21st Century Cures Act

Strongest EVV Evidence.
Under Federal Law.

Cryptographic. Hardware-enforced. Undeniable.

The 21st Century Cures Act requires Electronic Visit Verification for all Medicaid personal care and home health services. VerifiedKnock provides cryptographic, hardware-enforced proof that satisfies — and exceeds — every federal requirement.

Request EVV PilotContact EVV Team
CMS Elements
6 / 6
All required EVV data elements met
Verification Time
< 2 sec
On-card biometric match
Fraud Prevention
Hardware
Cannot be shared or replayed
Offline Capable
100%
Works without internet
How It Works
Biometric Smart Card
Caregiver carries a FIDO2 hardware card with on-card fingerprint match. Identity stays on the card — never in the cloud.
NFC Tap at Door
Caregiver taps the NFC sticker at the patient's door. Cryptographic proof of presence is generated instantly.
Resident App Alert
Patient or family receives a verified notification showing exactly who arrived, before any interaction begins.
EVV Record Created
A tamper-proof, hardware-signed visit record is automatically created — satisfying all 6 CMS data elements.
Federal Mandate

Built to satisfy every CMS requirement
— and go beyond.

Traditional EVV systems rely on GPS location, phone check-ins, or manual logs that can be falsified. VerifiedKnock uses cryptographic hardware proof — the same technology securing banking and defense — making visit fraud physically impossible.

  • Type of ServiceCaptured at card registration, linked to caregiver credentials.
  • Individual Receiving ServiceResident identity confirmed via NFC sticker at their home address.
  • Date & Time of ServiceCryptographically timestamped at point of tap — unforgeable.
  • Location of ServiceNFC sticker tied to physical address. No GPS spoofing possible.
  • Individual Providing ServiceOn-card biometric match verifies caregiver identity in under 2 seconds.
  • Caregiver ConfirmationHardware signature acts as a non-repudiable digital attestation of visit.