The store door is opened with a cell phone using Smart Access – AI-generated image

Smart Access for Locking Systems

Digital Key

Integrating Digital Keys into Your Locking Systems

Would you like to expand your product portfolio to include smartphone-based access? With Digital Key Smart Access, you’ll gain a backend solution for digital keys and access rights. The focus is on integration into your systems and applications—for example, in hotels and office buildings.

Here’s how we proceed: We’ll work with you to assess the requirements for your product and then determine what a suitable pilot project might look like. From your car to your front door: one key in your wallet, one backend for every access point.

From Challenge to Solution

From Electronic Locks to Digital Access

Physical keys are handed over, copied, and rarely lost—but when they are, it becomes time-consuming and costly. This applies just as much to vacation rentals as it does to hotel rooms and office buildings. A digital key requires more than just a connected lock. Keys must be issued, have a time limit, and be revoked when necessary. The Digital Key has already solved this problem in vehicles. With the Aliro standard, there is now a common foundation for doors and buildings. 

Our Solution at a Glance:

  • Manufacturer-independent—API-based software solution that is easy to integrate for all manufacturers
  • No dedicated app required on the lock—The key is stored in the iPhone and Android smartphone wallet, not in a manufacturer’s app
  • One backend, many scenarios—Private homes, vacation rentals, hotels, and corporate buildings—all using the same product
  • Integratable—Booking platforms, hotel, and corporate systems control access via interfaces
Contact picture Markus Beller
The Digital Key got its start in the car. We’ve been developing it since 2016, and since 2024 as a core member of the Car Connectivity Consortium (CCC). What emerged from that work now extends far beyond the vehicle: secure key delivery to a digital wallet, sharing with others, and immediate revocation. We’re now bringing these principles to the front door. With Aliro, there’s now a standard for this, and we’re providing the backend infrastructure. – Markus Beller, Product Owner, Digital Key Smart Access
With doubleSlash

Your Partner for a Future-Proof Digital Key Solution

10 Years of Digital Key Expertise

We have been developing the Digital Key since 2016 and have been a CCC Core Member since 2024. Our backend has been CCC-certified in the “Vehicle OEM Server” category since 2026. We think in terms of everything from individual vehicles to entire fleets.

Security from the Start

Certificate-based keys, short validity periods with automatic renewal, and revocation directly at the lock. Keys are stored in a secure wallet, not in the app.

Open to Your Systems & Your Customers

You can integrate booking platforms, hotel systems, and corporate systems via APIs. You can also connect your own user management systems.

Your Digital Key at a Glance

How Your Smart Access Works

For lock manufacturers, Digital Key Smart Access becomes a reality when the key lifecycle is clearly managed in the backend:

  1. Access permissions are granted for specific doors and time periods
  2. Changes or revocations are initiated via interfaces and implemented in conjunction with the lock.
  3. To this end, locks, devices, and permissions are managed within the respective manufacturer and customer context.
  4. Wallet integration, specific interfaces, and delegated permissions are defined in the integration concept. Which features are available in a pilot are agreed upon in advance.

A Backend for Your Digital Access Solution

Use Cases

Digital Access for Hotels and Office Buildings

Office Access—Based on Time, Location, and Role

  • Employees, service providers , and visitors are granted access based on their role, area, and time of day.
  • For building and facility management, the potential benefits include centrally managed access permissions and reduced coordination for temporary access.
  • Which roles, systems, and locations are to be supported is defined based on the specific application.

Guest Access—Based on Your Reservation and Stay

  • Family members and guests can unlock the door with their smartphones. No need to hand over keys.
  • A guest is granted access to their room(s) and authorized areas for the duration of their stay. If the reservation changes, access rights are adjusted accordingly.
  • For hotel managers, the benefits include fewer manual key hand-offs and a better integration of booking and access processes.
Aliro Standard

Aliro: The Standard for Smart Access in Buildings

Aliro is the Connectivity Standards Alliance (CSA) standard for digital access keys. It defines how smartphones and locks communicate with each other and how a digital key is structured. Among other things, it addresses applications in businesses and hotels.

What the CCC standard is for vehicles, Aliro is for doors. Both follow the same basic principles: certificate-based keys, wallet integration, and controlled sharing.

Why doubleSlash

Doubleslash, An Experienced Digital Key Provider

Contribute your experience with digital key backends

  • doubleSlash develops software for digital key systems and brings 10 years of experience in the automotive digital key sector.
  • We leverage this experience to plan key management and system integration in the building sector.
  • At Smart Access, we focus on the backend. Lock hardware and the applications for operators and users are part of the adjacent systems. We work with you and the partners involved to determine which components are needed and who will supply them.

From Your Product Idea to a Smart Access Pilot:

  • Understanding Requirements and the System Landscape
    We examine your locking system, the intended users, and the relevant hotel or office workflows.
  •  Integration of Interfaces
    We develop the backend logic and make it available via interfaces. This allows us maximum flexibility when integrating with potential customer systems. 
  • Agree on a pilot and success criteria
    Together, we determine which use case will be tested and how you will evaluate the solution’s suitability.

 

Contact

Are You Planning To Implement Digital Access For Your Next Generation Of Products?

FAQ

Questions & Answers About Smart Access