This is the origami inspired Kevlar ballistics shield created by mechanical engineering professors Larry Howell and Terri Bateman with the help of their colleagues at Brigham Young University. It's constructed of 14 layers of Kevlar with an aluminum core, weighs about half as much as a traditional shield (55-pounds vs 90+), can be deployed in less than five seconds, has a greater angle of protection than a traditional shield (and cover up to three people), folds down to a quarter of its size when not in use, and was proven to successfully stop 9mm, .357 and .44 Magnum bullets. Unfortunately, it will not stop a cannonball though so it's practically useless against pirates.
Keep going for a video demonstration including some ballistics testing.
Thanks to Fischer, who can't wait till we have real-life Star Wars deflector shields. Right? I want mine to create a mirror exterior so people can't see what I'm doing in there.