Data Jammer is a uni directional electronic display privacy film installed to protect against information being seen by non authorised people. Once applied to glazing the film shows a black screen to anyone viewing in from the external view of the room, whilst allowing those inside the room to clearly see the data on screen.

This has become a powerful tool in the workplace, assisting with GDPR and privacy concerns where computer and TV screens are used. The film is typically applied as a band across glazed partitions to cover the eye height region.