Laptop innovation: A history of unique and bizarre breakthroughs

2. IBM ThinkPad 701

IBM has been known to file patents for some strange laptop innovations. The ThinkPad 701 was known for its use of the TrackWrite, also known as the butterfly keyboard, which would fold out to full size when the device was open.

Image: TechRepublic

By Conner Forrest

Conner Forrest is an analyst for 451 Research. He was formerly a Senior Editor for TechRepublic.