Google Hosts 20th CCC Plugfest to Advance Digital Vehicle Access
The Car Connectivity Consortium (CCC) has launched its 20th CCC Digital Key End-to-End Plugfest, bringing together leading automotive manufacturers, mobile device companies, and technology providers to advance secure and interoperable digital vehicle access. Hosted by Google in San Jose, California, the event runs from October 12 to 16, 2026, and focuses on testing new capabilities introduced in CCC Digital Key Version 4.
The latest testing initiative marks another step toward expanding digital vehicle access beyond traditional private vehicle ownership. As connected vehicle technologies continue to develop, digital keys are becoming increasingly important for vehicle sharing, fleet operations, rental services, and service-based mobility. CCC Digital Key Version 4 is designed to address these evolving requirements by supporting more flexible and interoperable access across vehicles, smartphones, and digital management systems.
The five-day Plugfest provides CCC members with an opportunity to test implementations, evaluate compatibility, identify technical issues, and improve interoperability before solutions move further toward commercial deployment. The initiative reflects the consortium’s ongoing efforts to establish common standards that enable digital vehicle access to work securely and consistently across participating brands and devices.
CCC Reaches Its 20th Digital Key Plugfest Milestone
The 20th Plugfest represents a significant milestone for the Car Connectivity Consortium and its members. Over the past four years, these collaborative testing events have helped connect the development of CCC Digital Key specifications with practical implementations across vehicle manufacturers and mobile device ecosystems.
Alysia Johnson, President of the Car Connectivity Consortium, highlighted the importance of this achievement and the role of member collaboration in advancing digital vehicle access.
According to Johnson, reaching the 20th Plugfest demonstrates the commitment of participating organizations to developing secure, convenient, and interoperable digital key solutions. She noted that the events have helped bridge the gap between specification development and real-world implementation across vehicle and device brands worldwide.
This collaborative approach is particularly important because digital vehicle access involves several interconnected technologies. Automakers, smartphone manufacturers, software developers, and technology providers must ensure that their systems can communicate reliably while maintaining appropriate security and access controls.
Without shared standards and practical compatibility testing, users could face difficulties when attempting to access vehicles using devices from different manufacturers. Plugfests help participating organizations identify these potential challenges and improve their implementations through direct technical collaboration.
The latest event builds on this foundation by examining how Version 4 can support a wider range of mobility services.
Digital Key Version 4 Expands Beyond Private Vehicle Ownership
Digital vehicle keys allow compatible mobile devices to function as vehicle access credentials, reducing the need to rely exclusively on conventional physical keys. Depending on the implementation, users may be able to lock and unlock vehicles or use supported entry and access functions through a smartphone or another compatible device.
As digital access becomes more widely adopted, the technology is also finding potential applications in mobility services that require vehicles to be accessed by multiple users or managed remotely.
CCC Digital Key Version 4 introduces capabilities intended to support these more complex scenarios. The current Plugfest focuses on testing functions associated with fleet access, vehicle rentals, and service-based vehicle access.
In traditional vehicle ownership, access management is relatively straightforward because a vehicle is generally associated with a limited number of authorized users. Fleet operators, rental businesses, and service providers face different requirements. They may need to manage access for many vehicles, assign permissions to different users, and coordinate access through digital platforms.
For example, fleet operators may need to provide authorized employees with access to specific vehicles. Rental companies may require digital access arrangements that accommodate vehicle handovers and changing customer assignments. Service providers may need controlled access to vehicles during maintenance, inspection, or other authorized work.
These examples illustrate the types of scenarios that expanded digital key capabilities could support. The actual functions available will depend on the relevant implementation and the systems deployed by each provider.
Version 4 testing is therefore focused on determining whether participating systems can work together reliably across different vehicles, devices, and access-management platforms.
Server-Based Capabilities Take Center Stage
One of the major focus areas at the 20th Plugfest is testing new Version 4 capabilities involving server-based digital key implementations.
The test program includes Server-Based Owner Device, Server-Based Fleet Device, Fleet Management Server, and Service Provider Server capabilities.
These components are relevant to more complex digital access environments in which vehicle access may involve interactions between mobile devices, vehicles, and backend services.
A fleet management server, for instance, may form part of a system used to coordinate vehicle assignments and access permissions. A service provider server may support access arrangements associated with particular services. Testing these elements helps participating organizations assess whether their implementations behave consistently when interacting with other compatible systems.
Server-based approaches can introduce additional coordination requirements because access management may involve multiple software components and organizations. Consistent interfaces and standardized behavior can help reduce compatibility challenges and make it easier for different providers to participate in a broader digital mobility ecosystem.
The Plugfest allows engineers and technical specialists to examine these interactions in practice. Testing can reveal differences in implementation, identify unexpected system behavior, and highlight areas where specifications or test procedures may require clarification.
By addressing such issues during collaborative testing, CCC members can strengthen their implementations and improve confidence in cross-platform operation.
Cross-Version Interoperability Remains a Priority
Another important focus of the event is cross-version interoperability testing between CCC Digital Key Version 4 and Version 3 implementations.
In technology ecosystems, new specifications and capabilities are not always adopted simultaneously by every manufacturer. Different vehicle models, mobile devices, and supporting platforms may use different specification versions during a transition period.
Ensuring compatibility across versions can help reduce fragmentation and support a smoother transition as newer capabilities become available.
At Plugfest #20, participating organizations are testing Version 4 implementations against both Version 4 and Version 3 implementations. The testing is intended to identify potential interoperability issues and help determine candidate devices for the Version 4 Interoperability Device List.
This work is important for the broader digital vehicle access ecosystem. If implementations operate differently across versions, users and service providers could encounter inconsistent experiences when working with compatible products from different manufacturers.
Cross-version testing helps engineers understand where differences occur and determine whether they affect supported functionality. The results can also provide useful feedback for improving test procedures and strengthening the consistency of implementations.
As the market evolves, interoperability will remain a central requirement for digital key adoption. Vehicle manufacturers and mobile device providers need standards that accommodate technical progress without unnecessarily limiting compatibility across participating products.
Bluetooth Low Energy Testing Strengthens Technical Validation
Bluetooth Low Energy (BLE) testing is another key component of the 20th Plugfest.
BLE is a wireless communication technology used in many connected devices, including smartphones and automotive systems. In supported digital key implementations, Bluetooth-related functions can contribute to communication between compatible devices and vehicles.
The Plugfest includes Bluetooth LE sniffing validation to strengthen testing capabilities and assess remaining test cases and equipment-related issues.
Bluetooth sniffing involves observing and analyzing wireless communication activity to help engineers understand how devices exchange data. This type of technical examination can support troubleshooting by helping identify unexpected communication behavior, inconsistencies, or potential sources of compatibility problems.
Testing equipment must also be capable of capturing and evaluating the relevant behavior accurately. If test tools produce incomplete or inconsistent results, it may be more difficult for engineers to determine whether a problem originates in an implementation, a test procedure, or the equipment itself.
By evaluating Bluetooth LE testing methods and associated equipment, CCC members can improve the reliability of their validation processes.
The work contributes to the broader goal of ensuring that digital key implementations behave consistently under supported operating conditions. It also helps technical teams investigate issues before they affect deployment or the user experience.
NFC, Remote Keyless Entry, and Passive Entry Testing
The Plugfest also includes updated Near Field Communication (NFC) test cases and continued validation of remote keyless entry and passive entry capabilities.
NFC is a short-range wireless communication technology used in a variety of contactless applications. In supported digital key systems, NFC-based interactions can provide an additional way to authenticate access or interact with a vehicle.
Remote keyless entry and passive entry functions are also important elements of the digital access experience.
Remote keyless entry generally allows a user to perform supported vehicle access functions without inserting a conventional physical key. Passive entry systems can allow access when the appropriate authorized credential is detected, subject to the vehicle’s design and security requirements.
For digital keys, these capabilities must be tested carefully because they involve both convenience and security. Systems need to respond correctly to authorized access attempts while preventing unintended or unauthorized access.
Updated test cases help participating organizations evaluate whether their implementations meet the relevant expected behavior. Continued validation also allows engineers to identify differences between products and assess how those differences affect interoperability.
The goal is to support consistent functionality across participating devices and vehicle platforms while maintaining the security principles that underpin digital vehicle access.
Leading Automotive and Technology Companies Participate
The 20th CCC Digital Key End-to-End Plugfest brings together companies from across the automotive, mobile, and technology industries.
Participating member organizations include Apple, BMW Group, DEKRA, Ellisys, Ford Motor Company, Google, Motorola Mobility LLC, Rivian, Volkswagen Group Technologies, LLC, Samsung, and TTA.
The participation of organizations with different areas of technical expertise reflects the cross-industry nature of digital vehicle access.
Automotive manufacturers develop vehicle systems and access functions, while mobile device companies contribute smartphone technologies and related capabilities. Testing and technology specialists can support interoperability assessment, protocol analysis, and validation processes.
Bringing these organizations together creates an environment in which technical teams can test their implementations against those of other participating members.
This collaboration is particularly valuable because digital key functionality cannot be assessed solely within the boundaries of a single product. The technology depends on interactions between multiple components, including compatible devices, vehicle systems, and supporting infrastructure.
Collaborative testing helps expose differences that might not become apparent during internal testing alone.
Google’s role as host in San Jose also provides a setting for participating organizations to conduct practical technical work and exchange knowledge. CCC credited Google for supporting the event and enabling members to collaborate on interoperability testing.
CCC Emphasizes Practical Testing and Specification Development
Bahar Sadeghi, Senior Director of Technical Strategy and Advisory at the Car Connectivity Consortium, emphasized the importance of validating digital key implementations as access scenarios become more complex.
Sadeghi explained that digital vehicle access must operate consistently across a broader ecosystem as its applications expand. CCC Plugfests provide members with opportunities to evaluate interoperability in practice and use the resulting feedback to strengthen the specification.
This process illustrates the relationship between technical standards and real-world deployment.
A specification defines common requirements and expected behavior, but manufacturers and technology providers must still implement those requirements within their own products and systems. Testing helps determine whether implementations align with the specification and work effectively with other compatible solutions.
Findings from these events can help identify areas that need further examination, clarify technical expectations, and improve testing methods.
The approach also supports industry collaboration by giving participating companies a shared environment in which to evaluate challenges and exchange technical knowledge.
For consumers and mobility service providers, stronger interoperability could help make digital access more predictable across supported products. For automakers and technology companies, it can reduce the risks associated with developing solutions for an ecosystem involving multiple manufacturers and platforms.
Fleet Forum to Continue the Discussion in Vancouver
The work taking place in San Jose will be followed by further collaboration at the Car Connectivity Consortium Members Meeting in Vancouver, scheduled for October 20–22, 2026.
The meeting will provide members with an opportunity to discuss the next phase of digital vehicle access standards and continue conversations about emerging mobility requirements.
A Fleet Forum will also be held as part of the meeting. The forum will be open to both CCC members and non-members, bringing together fleet experts to examine how technology standards can support evolving fleet access use cases.
Fleet operations are an important area for digital key development because organizations often need to coordinate access across multiple vehicles, drivers, and operational requirements. Standardized digital access systems could help support more consistent processes when implemented alongside appropriate fleet management platforms and security controls.
The forum is expected to provide a setting for discussing these requirements and examining how industry standards can address the challenges associated with fleet-based mobility.
Connecting the technical testing conducted during Plugfest #20 with broader discussions involving fleet specialists can help ensure that standardization efforts remain relevant to practical operational needs.
The Future of Secure and Interoperable Digital Vehicle Access
The launch of the 20th CCC Digital Key End-to-End Plugfest highlights the automotive industry’s continued investment in connected vehicle technologies and standardized digital access.
As vehicles become more closely integrated with smartphones, software platforms, and mobility services, digital keys are expected to play an increasingly important role in how users interact with vehicles.
However, expanding the technology into fleet operations, rental services, and service-based access requires more than adding new functions. It also requires reliable communication, consistent implementation, effective access management, and interoperability across different products and systems.
The testing of CCC Digital Key Version 4 addresses these requirements by examining server-based capabilities, cross-version compatibility, Bluetooth LE communication, NFC functionality, and keyless entry features.
The results of the Plugfest will help participating members evaluate their implementations and identify opportunities to improve compatibility. The event also reinforces the importance of cooperation between automakers, mobile device manufacturers, and technology providers.
As the consortium continues its work through the October Members Meeting and Fleet Forum in Vancouver, the industry will have further opportunities to discuss how standardized digital access can support emerging mobility models.
Ultimately, the success of digital vehicle access will depend on the ability of different technologies to work together securely and consistently. Through its ongoing specification development and collaborative testing activities, the Car Connectivity Consortium is working to establish the common technical foundation needed to support that goal across the connected mobility ecosystem.
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