Four questions. Five answers. Which one doesn't belong?

The five answers

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Polaroid
Popsicle
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The questions

Developed in Japan in 1994 by a team at Denso Wave, which technology was originally designed to improve the tracking of automobile components?
In 1947, Edwin H. Land created what invention after a question from his young daughter sparked the idea?
Introduced commercially in 2000 by M-Systems, what was the name of one of the first commercially available portable digital storage devices?
Accidentally invented by 11-year-old Frank Epperson in 1905, what frozen treat was later renamed and became commercially popular?

Reveal the answers

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Polaroid
DiskOnKey
Popsicle

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