VingCard V2 Guest Credential Explained: Generation & AES Upgrade

The VingCard V2 guest credential is a generation of ASSA ABLOY Global Solutions' 13.56 MHz hotel guest key — the compact, typically disposable card handed to a guest at check-in to open a room. "V2" denotes a generation in VingCard's guest-credential line rather than a separate technology; it is a 13.56 MHz ISO/IEC 14443-A card read by VingCard Signature RFID locks and issued through Visionline or Vostio.

VingCard has produced hotel guest keys since installing the first recodable electronic keycard lock at the Westin Peachtree Plaza in Atlanta in 1978, and reintroduced Vingcard as its primary hospitality brand in 2024. The V2 guest credential belongs to that lineage as a compact guest-card generation, sized for a single room key rather than for carrying multiple applications.

The security of a VingCard V2 guest card depends on which credential tier a property issues it on. VingCard's legacy 13.56 MHz guest cards were memory cards described as having "no sector crypto" — no per-sector encrypted authentication — so their data was readable rather than cryptographically protected. The AES-secured generation VingCard adopted in May 2024 closes that gap, protecting the guest key with 128-bit AES mutual authentication and a message authentication code (CMAC) on every command.

On the AES tier, the credential also encrypts its exchange over the air and offers an optional randomized ID to prevent tracking, and it is certified to Common Criteria EAL3+. The full security model is covered in the VingCard AES memory card explainer; the key point for the V2 generation is that clone-resistance follows the credential tier and the property's key management, not the generation number.

Within VingCard's guest-credential line, the V2 and V3 generations differ mainly in on-card memory and therefore how much data a card can hold. V2 is the more compact generation, suited to a straightforward room key; V3 carries higher memory for richer encoding. Both are 13.56 MHz ISO/IEC 14443-A guest cards read by the same Signature locks.

Whether a VingCard V2 guest card resists copying depends on the credential tier it is issued on. On the AES-secured generation, the card protects its access data with 128-bit AES mutual authentication and a CMAC, so the data is not exposed as a plain readable serial the way a 125 kHz proximity card's fixed number is; reproducing it would require the site-specific diversified keys held in the property's system.

On the older, unencrypted memory generation, a guest card's data is readable, which is exactly why ASSA ABLOY Global Solutions moved the guest key to AES. For any property, the honest determinant of clone-resistance is key management: well-managed site keys on the AES tier reflect the security VingCard designed, while legacy unencrypted cards on unconverted doors carry the older risk.

The VingCard V2 guest credential is issued and revoked through the property's back end — Visionline on-premise or Vostio Access Management in the cloud. At check-in an encoder writes the guest's dated access rights to the card; the Signature RFID lock validates them at the door; and the software can expire, revoke, or re-issue the key centrally without visiting the lock. A returned card can be re-encoded for the next guest.

ASSA ABLOY's documented direction moves backend management from on-premise Visionline to cloud Vostio, which adds remote key issuance, property-management integrations, and mobile keys over BLE and NFC on the same Signature readers. The V2 guest card is the compact physical credential inside that issuance-and-revocation workflow.

A property upgrades its V2 guest credential to the AES-secured generation gradually, because VingCard Signature RFID locks are multi-technology 13.56 MHz readers that accept legacy and AES cards at the same door. The move typically pairs current AES card stock with Visionline or Vostio software provisioned for the AES tier, so encoders begin writing AES-protected keys while unconverted doors keep working.

An industry executive described the 2024 AES upgrade as giving hotels "a more secure contactless way to transition away from legacy access technologies" — a transition, not a single switch. For a property on the V2 generation, that means re-carding in phases and retiring legacy stock as it is used up, optionally adding mobile keys through Vostio.

A VingCard V2 guest card is re-encodable, so it can be reused across many guests rather than discarded after a single stay. When a card is returned, the property runs it back through the encoder, which overwrites the previous access data for the next guest; cards are also produced as recyclable stock, which is part of why VingCard framed its 2024 credential update around sustainability alongside security.

Physical lifespan depends on handling — contactless cards have no battery and no contacts to wear, so a well-kept card can serve many issue cycles before print wear or physical damage retires it. Because access rights are written per stay and expire at checkout, an old card carries no standing access; its usefulness ends the moment its dated rights lapse, whether or not it is physically returned.