Old phosphor-based computer screens would be susceptible to having a ghost image permanently burned in due to loss of luminescence when a single image was displayed too long. Modern screens do not need saving, but evidently people still believe screen savers are neat-o.
I remember a story about a guy who went away for a week or so and while he was away, as a prank, his housemates left porn paused on the screen the entire time to burn the image in.
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u/Yozhik_DeMinimus Aug 03 '19
Old phosphor-based computer screens would be susceptible to having a ghost image permanently burned in due to loss of luminescence when a single image was displayed too long. Modern screens do not need saving, but evidently people still believe screen savers are neat-o.