Your computer mouse probably makes a clicking sound… every time you click. A Dutch company called Nexus has patented a mechanism that removes the sound. So what you have is a silent mouse. They figure you don’t really need the auditory confirmation that you’ve clicked, since you can see (on your computer screen) that you’ve done so. There’s a small one called the sm7000, meant for traveling. And now there’s a large 5-button sibling, called the sm8000. All 5 buttons are silent.A silent mouse could be really useful in a crowded office where all you hear is (click,click,click,click), all that is needed now is a silent keyboard.