I know this is a dead thread, but I found it, so maybe others are also... Here are instructions I found for NFC tags:
3rd Party App Integration (Tasker, Llama)
Open the Tasker app
Go to the Tasks tab by tapping it at the top
Press the "+" button at the bottom in the middle
Name your new task ("Turn On Office Lamp" for example), and press the check mark
Press the blue "+" button
Select "Send Intent"
In the first text box under "Action", enter the following without quotes: "android.intent.action.VIEW"
Further down the screen there's a text box for "Data", where you enter the string that will perform the action you want. For our example, we'll be turning a light on. [for a full list of the syntax for performing different actions, see this page]
To turn on the light on my desk, I enter the following without quotes: "authomation://device/31234567/36/on"
Next, scroll to the bottom of this window and press the dropdown under "Target" and select "Activity"
Press the green check mark
Press the green check mark again
NFC Task Launcher App Instructions:
Launch NFC Task Launcher
Click the plus sign at the top right corner of the app.
Select either "New Task" or "New Switch" (if you want to toggle between actions).
Enter a tag name (can be anything you want to help identify the tag action).
Press the "Add actions" button.
Select "Applications & Shortcuts"
Select "URL" and click next.
Enter the authomation uri syntax. For a scene it would be with out quotes "authomation://scene/1234567/20"
Where 1234567 is the vera unit id and 20 is the scene number to run.
Press OK when done entering the uri in the dialog box.
Click on the "Save & Write" tag at the top right hand corner.
In the options section, uncheck "write tag name". (This will free up some data to be written to the tag)
Place tag on the bottom of your phone and let the tag writer write to the tag.
Once the tag is written, you should be good to go and the tag should function as intended.