If you have owned a Blackberry phone in the past, you definitely remember how the display locks as soon as you insert the phone in a magnetic case. It looks like Google/ASUS have secretly implemented a similar feature in the Nexus 7 tablet. So they placed a magnetic smart cover sensor under the screen which awakes the tablet when a magnet is placed against it on the bottom left. YouTube user wwscoggin uploaded a video where he demonstrates how the new hidden feature. We’re wondering how the folks from iFixit missed this little detail after they dissected the Nexus 7–pretty unusual. And yeah, check out the video below.