A sliding closet door operates on the same principles as a train: wheels on tracks.
The slider on Pantech's new cell phone operates on the same principles as a mag-lev train: yep, magnetic levitation.
The South Korean manufacturer found they could reduce the product's size by ditching the mechanical springs used on most sliders and replacing them with mag-lev. The top half of the phone slides open frictionlessly and enables an ultra-thin form factor for slider phones, at just 9.9mm. No word on whether you can also use the phone to pin takeout menus to the 'fridge.
[Article in the Korea Times.]
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