How many times have your thoughts been interrupted by someone? Whether they mean well or are just being plain rude, unwelcome interruptions are a serious distraction to your train of thought.
A train of thought is a wonderful machine which may lead to unexpected breakthroughs and discoveries. Often one may get interrupted by someone who see's something on your screen and either consciously or subconsciously wants to make a comment/steer you in their direction of thought as opposed to letting you have your freedom of thought, expression and creativity.
One way to prevent such unwelcome interruptions is to use a PrivacyDevil Privacy Filter. Firstly a PrivacyDevil Privacy Filter signals to all other parties that you are busy and do not wish to be interrupted as what you are working on is important enough that you are using a PrivacyDevil to shield yourself from others line of sight. Secondly it actually does restrict the viewing angle of your screen, in effect giving you a forcefield for your screen, be it a laptop or monitor.