Reregister device with Play Store I was recently going through my list of devices on the web Play Store to remove an old device.  While looking at the list, I saw that I had two entries for my Nexus 4: "LG Google Nexus 4" and "Nexus 4".  As I installed CyanogenMod shortly after getting the phone, I wasn't surprised to see the second entry.  I decided to delete the one called "LG Google Nexus 4" as it was registered when I first got the phone.

Yesterday, I went to install an app to my phone using the web Play Store, but I no longer have any devices listed there.  I tried reselecting the account to use in the Play Store app, and also wiped data for the app using TitaniumBackup and relogging into the Play Store app.  Neither approach caused my device to be added back to the web Play Store device list.  How can I readd my Nexus 4 to the devices attached to my account?
From my understanding each device listing in the Play Store is referenced to a Unique ID. By removing the device you have removed this ID. You should be able to sign out of your Google account on your device, then sign back in, making sure all of the sync features are turned on, this should create a new UID for your device, putting an entry in devices once again.