Cortana can respond to voice commands. You can invoke it with the ‘Hey Cortana’ command, or a custom name, or you can open the Windows search box and click the speaker icon to activate it. Cortana collects quite a bit of information when you use it and it keeps a log of all the voice searches you’ve made. If you ever need to view your Cortana voice search history, you can do so easily enough. Here’s how.