Parcel ban not working

[Lara Panthar]

Question: I have banned someone from one of my parcels. I put the name on the ban list but the person is still able to come and is picked up on both of my visitor lists ( lists made of 2 different types of scripts with a short range of 20m next to landing spot). How is this person able to escape the ban and come to my parcel? I have owned this particular parcel for 10 years and this has never happened before! Advice and thoughts?

[Aethelwine]

Are you sure that the visitor reports are showing they actually trespassed on the parcel, might it be that the visitor reports are being made when they push against the banline? 

[Sylvia Tamalyn]

How far away are the visitor counters from the closest parcel border? 

[Pussycat Catnap]

If your parcel if close to a region edge, script glitches can cause it to pick up people outside the plot but on the other region is the script is scanning by range rather than by 'definitions'.

This is a ranged based scan:

llSensorRepeat("", "", AGENT_BY_LEGACY_NAME, 23.9, PI, 1.0);

- that can glitch near parcel edges, That's why I set it to such an odd number.

 

By contrast here's a scan that works by defining what kind of scan to do:
 

integer scanDistance =  AGENT_LIST_PARCEL;
// Avatars in parcels in this region owned by the owner of the parcel this is rezzed in.
// integer scanDistance = AGENT_LIST_PARCEL_OWNER; 
// All avatars in the region.
// integer scanDistance = AGENT_LIST_REGION;

    list visitorsRightNow = llGetAgentList(scanDistance, []);

- This kind doesn't tend to glitch, It's good for visitor scripts but can be overly broad if you're looking for something like a security orb.

Unfortunately in most sold products these are coded the other way around... people scan for visitors by range, and do orbs by parcel... leading to messy and unreliable results...