If you accidentally input characters on iPad 2, you can shake the iPad 2 body, and a prompt will pop up on the screen to cancel your input. And shake it again to redo the input.

iPad 2 is the second-generation Apple iPad product. It was officially released on March 3, 2011 and was released on March 11. Available in the United States. The biggest difference compared with the first generation is that iPad 2 will be thinner, lighter and have a front-facing camera, and will be sold in both black and white versions. Apple iPad 2 supports a variety of wireless communication standards, and can support Wi-Fi, UMTS, CDMA alone, optionally with 3G functionality, or a combination of the three. The iPad 2 uses a lighter carbon fiber material to replace the original brushed aluminum casing. According to data released by Apple, iPad 2 was launched in the United States on March 11, 2011, in 26 other countries on March 25, 2011, and in China on May 6, 2011.