Guardian Ultrasonic - Block your phone's microphone

05/05/2026

Guardian Ultrasonic blocks your phone’s microphone, so it can not secretly listen to you private conversations.

It only blocks the microphone. You are still fully reachable for phone calls and messages.

👉🏻 https://projectguardian.eu

16/04/2026

Signs your phone might be listening to your conversations

👉🏻 https://projectguardian.eu/

10/04/2026

Everyday we carry our phone, which has an active microphone, with us. Technically it has the ability to always listen.

Guardian Ultrasonic prevents your phone from secretly listening to your private conversations

👉🏻 https://projectguardian.eu/

12/02/2026

We had a blast at Intersec Dubai. Thanks for everyone we got to know at our stand 🥳🚀

05/02/2026

Guardian is designed and engineered completely in Austria. We design our hardware, we write our own software.

That is the only way to build a secure device at a price most people and companies can afford.

👉🏻 Order at https://projectguardian.eu/

04/02/2026

Everywhere you go, your phone goes with you — into meetings, your home, your office. And unlike anything else you carry, it has a microphone that’s always ready.

Most people don’t think about it… until the conversation actually matters.

Guardian Ultrasonic prevents your phone from secretly recording your private conversations.
👉🏻 Order at https://projectguardian.eu/

🎙️ Microphone blocked: When placed on Guardian Ultrasonic, your phone can’t hear anything of its surroundings.

🔋 Battery Powered: The built-in battery will comfortably take you through multiple meetings a day.

🔐 Designed for privacy: No internet access, software updates, bluetooth or WiFi. Eliminating major attack surfaces.

😊 It just works: Automatically turns on when a phone is placed on top. No power-on button you can forget to press.

29/01/2026

People don’t trust their phones anymore for a reason. That’s why we started Project Guardian and have people ordering from all over the world.

17/12/2025

Some conversations are better kept private. To spread privacy to even more people, we have a 10% Christmas discount until end of December.

Use code “xmas” during checkout 🎄 👉🏻www.projectguardian.eu

12/12/2025

From 11–14 January 2026 at the Dubai World Trade Centre, Intersec returns for its 27th edition.

We will be on site with Guardian Ultrasonic: Preventing your phone from secretly listening to your private conversations.

Come meet us, talk to the team and try the product for yourself.

👉 Register here to visit: https://www.messefrankfurtme-registration.com/MF_Shop/ISDU26/Authenticate #

11/12/2025