We have made available a FREE "phantom mode object" which when worn will put the avatar into phantom mode i.e. it can't be pushed around or harmed. You can pick a copy up from the L-Tek main store on the floor by the MTEAbolt vendor:
http://maps.secondlife.com/secondlife/Vilmarh/174/214/84
or
http://slurl.com/secondlife/Vilmarh/175/216/84
The box at the location above contains 2 different phantom mode objects:
1. A tiny box which is worn on the pelvis by default
2. A METAbolt bracelet worn on the right wrist
Both are full MOD and you can change worn location using a SL viewer if you want to.
OperationSelect the object to wear in your inventory
Right click and select the "wear" option
Once you wear it say "lock" into public chat to activate it. Say "unlock" into public chat to deactivate it.