title: Can't run my application on my Nexus 4 (unauthorized phone)
body: <p>I was doing the Android tutorial on the Google website and I was at the point where you want to run your fantastic Hello World application on your phone. When I run my application from Eclipse, I see that my phone status is ?? and the target is unknown. When running adb devices in cmd, it says that my phone is unauthorized. It appears that it has something to do with the RSA fingerprint prompt. I don't remember ever getting such a prompt. Yes, I am running in PTP mode and debugging is enabled. I tried, after looking around on internet for multiple hours:</p>
  
  <p>-Enabling/disabling debugging mode repeatedly
  -Uninstalling and reinstalling my drivers for my phone or ADB
  -adb-killserver and adb-startserver
  -Restarting my phone and unplugging/replugging in multiple ways</p>
  
  <p>I did notice that in my (user)/.android/ folder, I don't have a file called adbkey.pub (which is apparently the file that's supposed to have my key). Anyway, I don't think I've ever received the prompt about RSA fingerprint and I can't make it appear in any way.</p>
  
  <p>Do you guys have any idea what I could do at this point. I tried about everything on these forums and around on the Internet but maybe there is something else I could do. Should I reset my phone to factory settings at this point to make the prompt appear again?</p>