Launchit writes something like: "launcher:FRFLY@actiontype=TaskUri&TaskUriData=ms-settings-camera" to the tag and has their application handle the launch.
Now at first you will get the acceptation question, but after two or three times it will ask you if you trust the app and you can add it to your trusted apps.
This will make it bypass the lock screen and start the application.
I can 100% confirm that this approach works on a lumnia 930.

Now i was thinking of adding that to a custom app and just not have it start the requested app but instead close itself.
In theory this should work, basically turning it into an unlock app.

Not entirely true.
There is a way to automatically make it unlock the windows phone.
Currently the ring is purely used as nfc tag.
But if the app had a function to start apps(like nfc launchit) applications it can be added to the trusted apps.
It will bypass the unlockscreen automatically and directly start the app.
You could simply download nfc launchit but it would be nice if the nfc ring control app had this functionality.
It would only have to use the UID of the tag to recognize which app to start.

Sorry haven't been able to check back for some days.
I didn't see an update so i uninstalled and just downloaded it again.
I'm still seeing the register function.
Now i don't mind it being there at least i know its not needed anymore.
But this still leaves me with the problem that when i for instance try to create a link to a webpage.
it gives me two textboxes the label above it says:"undefined"
Both textboxes have Next buttons.
When i enter the link in both textboxes and use either next button it leaves me with a blank vCard on the tag.
It also does not seem to recognize my phone(lumnia 930).

I got my horizon ring today and downloaded the app for windows phone(lumnia 930).
I tried registering the ring but that part of the app does not seem to recognize the ring, neither does the app reconize the phone btw.
The other parts of the app do recognize the ring although link, text, vcard just add a blank vcard to the ring.
I found that youtube, twitter and facebook do work.

Is there something i'm doing wrong?