Can't pick up other people's items

[SilverLeaf]

I'm making an RPG and basically no one should be able to pick up other players' items. It should detect that once an item is picked up by you, it is soulbound to you. Because items are also added when save/loaded, the trigger should have a 2nd part, a failsafe that locks that item to you as you drop it, so that no one else can pick it up. Anyone can link me to such a system? I searched variants of "non transferable items" to no success.

Thanks.