Cell Phone Blockers

We our making and thinking of new technology every day and one of our newest things is a cell phone blocker. This allows you to be cut off in the middle of a conversation. This is a good and bad thing. Even though they are illegal in the United States of America, they are going to find there way here. I believe they are bad because they can interrupt you when you are on important call, for example if someone you now is sick or in a serious accident and you are trying to get information on them, it can interrupt you and you can miss very important information. But on the other hand it could be a good thing, for example if you are being annoyed, when you are somewhere you can instantly shut the person conversation off, and get back to being peaceful.