KEEP CONVERSATIONS PRIVATE! Mic-Lock secures your devices microphone input with a lifetime guarantee. When plugged in, Mic-Lock will automatically becomes the devices primary microphone which prevents others from listening in. PREVENT CYBER ATTACKERS: Our one-piece privacy solution prevents audio hackers from using your microphones or even your speakers to listen to you. THE ONLY DIGITAL ANTI-SPYING SOUND PREVENTOR: Mic-Lock tricks your electronic device into believing its microphone is occupied by copying the exact signal a microphone generates, thus preventing cyber attackers from using it. SIMPLE AND EASY TO USE: Remove rubber keychain top, plug into our 3.5mm headphone port, and you are good to go! Works with any device with a 3.5mm port, like laptops, desktop computers, cell phones, and tablets. COMPACT DESIGN: The compact design is perfect for traveling to work, school, vacations, or anywhere you may be headed.