Google has released new Pixel smartphones that have motion sensing technology. At an event in New York City on Tuesday, Google announced the release of its new Pixel 4 smartphone. The device costs $799. A larger model, the Pixel 4 XL, sells for $899. Both are expected to be available worldwide on October 24. In addition to new phones, the company also introduced a new laptop, wireless headphones and improved speakers for the home. One of the most talked about improvements in the new Pixel phones is a system called Motion Sense. The system is powered by a small radar sensor inside the device that detects movement around the phone.