Prevent Sim from carrying object

I made a smart mirror using a mirror and tunings from computer and tablet, the only problem is they can take it off the wall and carry it around...it floats above their heads.  

I found something like this in one of the tunings but not sure how to make it work.


This doesn't work.
<V n="carryable" t="enabled">

<U n="disabled" />

</V>
Any ideas or guidance?

Thanks