Staff gates
Role and shift predicates at depots.
staff
AFFIXIO
Transit and logistics
Transportation eligibility verification
Transportation operators need fast, auditable eligibility at gates and depots. AffixIO provides signed allow or deny with spent-proof anti-replay for high-throughput entry.
TRANSITLOGISTICSOFFLINE QRSPENT PROOFML-DSA-65
At a glance
- Product
- Gate and crew eligibility with signed proof
- Scope
- Transit, rail, ports, road logistics
- Anti-replay
- Spent-proof on QR credentials
- Retention
- Zero PII at verifier by default
Transportation eligibility verification decides whether a passenger programme member, crew member, or vehicle actor may pass a gate, then records a signed outcome.
The challenge
Throughput versus auditability
Gates optimise for speed and often leave weak evidence of who was cleared. Screenshots and static badges create fraud and dispute pain.
Replay and screenshots
Static credentials fail under copy attacks.
Offline depots
Connectivity drops at yards and remote stops.
Crew contractor mix
Multiple employers share the same physical gates.
Use cases
Transportation scenarios
Apply at passenger, staff, and logistics boundaries.
Concession programmes
Passenger eligibility without full identity at gate.
programmePort logistics
Driver and vehicle clearance with short TTL.
portProof pipeline
How verification works
- 01
Issue
Policy authority defines a Noir circuit for the rule set. Witness inputs come from systems that already own the records.
- 02
Bind
Proof is bound to event context: programme ID, expiry, geography, and anti-replay nonce. ML-DSA-65 signature applied at issue.
- 03
Present
User, agent, or device presents the credential via API call or secure QR at the service boundary.
- 04
Verify
Verifier receives allow or deny plus Merkle reference. No personal data retained at the verifier by default.
Stack
Technical foundation
ML-DSA-65Post-quantum signatures
NoirZero-knowledge circuits
MerkleAudit anchoring
RESTOpenAPI 1.4.2
SDK@affix-io/sdk
QROffline spent-proof
Proof generation can run on infrastructure you control. See technical architecture and circuit catalogue.
FAQ
Frequently asked questions
Is this a ticketing system?
No. It verifies eligibility and access proofs. Ticketing systems remain the commercial layer.
See also offline tickets?
Yes. /sectors/offline-tickets covers event-style offline credentials.
Get started
Validate transportation eligibility verification on the live sandbox, then scope a pilot with engineering.