Land owners need to be able to prevent people from attaching objects containing a 'pay' script on their land.
I am constantly having to ban people trying to trick or steal from people using payable prims. Also - people who arrive with a lottery of some kind attached to their avatar.
There needs to be the ability for some sort of scanner script that detects payable objects (other than those owned by the land owner and the land-group members) and ejects the avatars using these objects (and also returns or deletes the actual objects if they are dropped / left behind).
It's not enough having land set to 'no-build' and 'no object entry' as people can just arrive with these things already attached - and recently I have even had such objects being left behind by avatars (despite the land being set to 'no build' and 'no object entry' and 'no scripts').