This device does not need any server support, nor any storage card to store key files. The pseudo-encryption system of voice IP packet transmission mode is adopted for non-domestic low-end encryption mobile phones. Nor is it a traditional encrypted mobile phone which is authenticated, encrypted and decrypted by the server storage key system (the handshake key file on the server can be decrypted as well), the real 128-bit dynamic one-time key. Each call is generated randomly.
The system is directly plugged into the headphone hole of your mobile phone. The voice calls of your mobile phone will be transmitted by hardware digital voice encryption. The air transmission is a non-voice digital signal processed by digital encryption. Whether it is air interception, computer room, undercover, etc., it will hear a piece of noise. Only in this way can we completely prevent the voice of your mobile phone. It uses hardware to automatically generate 128-bit scrambling password each time. It changes randomly and is a one-time key. Every time you dial a phone, it generates a random code that can not be decoded.