Effective protection against eavesdropping using mobile phones

A unique acoustic safe stand that serves as a speech protector for mobile phones. Its advantage is that it does not block calls, SMS, or other cellular communications.

Once a phone is placed in the ASU 1.0, it automatically generates ultrasonic noise that overwhelms the phone’s microphone, making it impossible to capture a clear recording. The ultrasonic interference remains inaudible to human hearing while still allowing the phone to function normally for communication.

• Non-intrusive – ultrasonic noise is inaudible to the human hearing and won’t disrupt your meetings.
• Broad Compatibility – compatible with most mobile phone models.
• Discreet Design – resembles an ordinary phone stand.

Ultrasound Generator

The ASU 1.0 provides powerful protection against eavesdropping via microphones in mobile phones, dictaphones, and other smart devices. Ultrasonic noise is the most effective defense against eavesdropping, as it overwhelms the microphones, rendering all recorded sound unusable.

Easy to Use

The ASU 1.0 is fully independent and easy to operate. Simply place the stand where participants can place their phones, plug it in, and turn it on. Then, insert the phone into the ASU 1.0; the stand will glow with blue backlighting, indicating that the device is fully operational. The device activates automatically when a phone is inserted—no setup is required. The stand is designed for one mobile phone.