To facilitate the initial handshake, you’ll have to enter a code and pin generated by the computer on your Android device, after which accessing the computer (or any others you configure) is as simple as pulling up the app and tapping the intended target. You can find that here, and Google says it supports Windows (XP and above), Mac (OS X 10.6 and above) and Linux. To make it work, you’ll need to install a listener service (a Chrome extension) on the intended target PC. From September 2011, the company’s let users do that computer-to-computer using its Chrome Remote Desktop, so this is just the company extending the concept to Android devices, be they phones or tablets.
Google’s targeting the app at users who might be on the go but need access to a file stored locally on an otherwise inaccessible computer.