Why it called the “privacy tempered glass screen protectors “?

Privacy Tempered Glass Screen Protectors also named anti-spy tempered glass screen protectors anti-glare tempered glass and anti-peeping tempered glass screen protector . It is made by the world's only ultra-fine blinds (MICROLOUVER) optical patented technology. This special technology can make the users only can see the information in front of the mobile phone screen within the 60 degree area,  others can only see the black screen from both sides. 

The privacy tempered glass screen protectors is made of the 0.33mm 2.5D round edge Japan Imported NSG Tempered Glass raw material and the Anti-peeping OCA glue .There are two types of  the Anti-peeping OCA glue, one is 180 degree ,means that can protect the privacy with left and right two sides ,the other is 360 degree which means can protect the privacy with the four side . However , because of the technology limited the 360 degree privacy protection material is too difficult to import ,so all the privacy glass screen protectors which selling in the market or on-line are all in 180 degree protection .And there are also two kinds of the Glass raw material, one is imported from Korean which made the finished products will be a little darker than the Japan raw materials , please kindly to check and see the below photos , then you will see the difference 

With the use of physical optics principle , the screen has only 30 degrees of visibility in the front and side, and 30 degrees from the left and right, otherwise you can not see the screen. So it can effectively protect the business secrets and personal privacy. Whether it's work, study, newsletters, or entertainment, it makes computer and mobile phones more freely available. It helps business executives, lawyers, consultants, and financial professionals avoid to loss of the business information when using computers, tablets and mobile phones . With the anti-peeping tempered glass screen protectors ,people can use the tablets and phones more safe in the public place .