◆Case Study
Fundão: Digital Identity & Smart Access with BlueSignal + Blue Blockchain
From onboarding to field verification: unique identification, NFC/RFID hardware, and blockchain integrity proof — with a simple citizen experience and municipal governance.
Executive summary
The Municipality of Fundão, in partnership with The Danyalgil Company, delivered a digital identity and access solution based on BlueSignal RFID/NFC cards with unique linkage per person and integrity registration on Blue Blockchain. The system reduces operational friction, improves event traceability, and raises trust in public processes. The delivery integrates hardware, software, and governance using the C‑TIE™ framework.
Problem
- Identity and validation workflows often rely on scattered data, low standardization, and manual checks.
- In municipal environments, trust must be auditable, and the citizen experience must stay simple.
How it works
- 01The municipality issues a BlueSignal card and links it to an identity (internal ID).
- 02The system generates a cryptographic identifier and records proof on Blue Blockchain.
- 03In the field, NFC/RFID reading validates authenticity and status.
- 04Event logs generate auditability and traceability.
Solution
BlueSignal (RFID/NFC Card)
- NFC/RFID card as the identification key.
- Unique identity linked to a secure record.
- Fast validation via read (app/portal/reader).
Blue Blockchain (integrity proof)
- Immutable record of key events (issue, activation, validation, revocation).
- Integrity proof using hashes, states, and timestamps.
- No personal data stored on‑chain.
Software (portal & operations)
- User and credential management.
- State control (active/inactive/revoked).
- Audit trails and reporting.
Differentiators
- Hardware + software + trust layer delivered together.
- Security by design: provable integrity without exposing sensitive data.
- Scalability: ready to expand to other municipal services.
- C‑TIE™: delivery method from design to operations.
Impact
- Less operational friction in identity verification.
- Higher audit‑ready trust in the process.
- Standardized credentials and event traceability.
- A base for service expansion and integrations.
Stack / Technology
- RFID/NFC (BlueSignal)
- Web portal + APIs
- Cryptography + hashes
- Blue Blockchain (integrity & evidence)
- Audit and event trails
Want to apply the same model in your context?
Identity, traceability, and integrity at scale — with production‑ready hardware and software.