It is time to take your privacy seriously

Why we are no longer supporting Alexa

We have made a conscious choice not to ship hardware with direct support for the online voice assistants Alexa or Google Assistant.

Our Privacy Philosophy Benefits You.
We believe that:
  • Our customer should be able to be independent of us –  cloud-based service (e.g. Alexa Skill) is a service that must be made available on an Internet server day and night. This requires an infrastructure with financial and technical support.  We want to be honest with our clients, and cannot guarantee this service for the next 5, 10 or 20 years. Therefore, want to offer you a better solution for the future.
  • We should not have access to our customers’ installations – The skill not only allows the online voice assistant to access our customers’ installations, but also us at ProKNX, and anyone who should ever have access to our data pool. We do not want to bear this responsibility, as it is not in your best interests.
  • “What’s said at home, stays at home” – Our slogan is one that we truly believe in. Our development of ARAGON shows that today we are able to enable privacy and offer voice assistants offline. We refuse to support data and information theft.

Therefore, as of Sep 1, 2023, our “realKNX servers” will no longer support Alexa, Google Assistant, or remoteConnect.

What happens to the systems we have delivered so far?

For more information, go to our parent-site ProKNX

The Pyramid of Protected Privacy

Voice control with Privacy in focus

Aragon2 is our second-generation smart speaker. The original award-winning Aragon for Snips voice-controlled assistant was launched at the beginning of 2020 with the privacy of data as its primary focus.

The Aragon2 functions in an isolated network to control home automation devices, just like its predecessor, with all analysis of speech and execution of commands carried out on-device. This ensures the privacy of the user, and reliability of service.

Aragon2 differs from the original device by having augmented capabilities. When the smart speaker is in “online mode” the user has access to powerful online services like OpenAI/ChatGPT and Google.

Protected Mode – 100% Offline – Privacy guaranteed

In the Protected Mode, the Aragon system:

– Executes all home automation-related voice commands
– Speaks with a selectable voice, which also runs on the device.


– Cannot update its software
– Cannot perform Network time synchronization over the Internet.

The solution: the Master is equipped with a battery to power the RTC. Additionally, all Satellites are equipped with special time synchronization software.

If you plan to run Aragon in an Internet disconnected network, add the Offline Kit to your basket.

Ideal for:

– Premises where the integrity of the users is an absolute requirement, e.g. executive meeting rooms
– Where Internet connection is limited, e.g. cruise ships and yachts.

Safe Mode – connected to the Internet

In Safe Mode, the Aragon system:

– Executes all home automation-related voice commands
– Speaks with a selectable voice, which also runs on the device.
– Uses Network time synchronization over the Internet
– Updates software at the user’s request. Additionally, Aragon
– Can optionally answer weather forecasts and traffic information queries.

No audio leaves the device, the voice commands are treated on the device (on-board ASR and NLU).

Ideal for:

– Premises where the integrity of the users is a requirement e.g. Homes, Offices, Hotels.

Trusted Services mode – Online-Offline

By adding the Trusted services, Aragon will be able to answer any query that you may ask OpenAI/ChatGPT and Google. Google search is accessed in a safe and anonymous manner via a proxy service, SerpAPI.

– ChatGPT by OpenAI is an artificial intelligence chatbot designed to engage in natural-sounding conversations. It utilizes the most advanced AI technology available today and can provide responses that are both coherent and accurate.

– SerpAPI is a powerful tool that enables access to Google and Bing search engine results pages, anonymously and with privacy.

How Trusted Service Mode Works

When the user switches to Trusted Service mode, Aragon uses an online service for transcription. This is necessary in order to understand users’ queries. The onboard Speech-to_text (or ASR) is trained and limited to Home Automation and media control tasks. To support the full English language, the audio is redirected to an external service.

The user enters online mode by saying Enter online mode and leave by saying Leave online mode. Aragon will automatically leave online mode after 1 hour of inactivity.

Before using online mode, the user must create free accounts for trusted online services.

Download your free copy of the privacy pyramid by clicking on the link below: