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As a [link url=http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/PTO/search-adv.html&r=19&p=1&f=G&l=50&d=PG01&S1=(apple.AANM.+AND+20170803.PD.)&OS=aanm/apple+and+pd/8/3/2017&RS=(AANM/apple+AND+PD/20170803) target=_blank]new patent[/link] discloses, Apple is working on a  [link url= target=_blank]privacy filter[/link] for the display. Unlike previous solutions, the filter is no longer applied over the screen, but directly integrated into the display. As a result, the function can, for instance, be easily switched on and off again. Furthermore, the technology allows flexible adjustment of the viewing angle.