Abstract: A computerized security peripheral device has a central processing unit (CPU), a power supply, a digital memory; a microphone; a speaker apparatus; first circuitry enabling wireless data transfer to and from a communication device having compatible wireless communication capability; and second circuitry executing coded instructions enabling encryption of audio input at the microphone and decryption of incoming encrypted voice data using one or more keys stored in the digital memory. The audio input at the microphone is converted to an audio data stream that is encrypted using the one or more keys, and then is provided as an encrypted stream through the first circuitry to the network-connected communication device, and wherein encrypted voice data received at the first circuitry is decrypted using the one or more keys, and the decrypted data is provided as voice date to the speaker apparatus.