Apple Inc. unveiled a more powerful and thinner version of its tablet computer called iPad 2 with the Touch ID fingerprint sensor on Thursday, with pre-orders starting Friday for customers in the United States, Japan, China and more than 30 regions.

"It is the thinnest iPad we have ever made, just 6.1-mm thin. ... It makes it the world's thinnest tablet," the tech giant's senior vice president, Phil Schiller, said at a special event at its headquarters in Cupertino, California, to announce the device. "The new iPad Air 2 is so thin, you can stack two of them and still be thinner than the original iPad."

The new tablet will have Apple's new A8X chip, which will make its processing power about 40 percent faster compared to the previous generation. It will have a new 8-megapixel camera, and the screen will have an anti-reflective coating to reduce glare.