Minecraft NoDrop add on help

[muzzler]

Hi all,
My stepson is bugging me to pay £30 for this nodrop addon that will keep his inventory items when he dies.
I've done some digging and it seems to me that this is a server side mod? so he doesnt really need it as the server dictates the rules. He doesn't run a aserver himself but plays on one with this addon.
Any help appreciated.
Thanks,
Steve.

 

[muzzler]

ah so it is server side then?
I'm trying to explain it to him but the eyes glaze over lol.

 

[muzzler]

well after me explaining several times he still wants to buy it- oh well it'll be a lesson for him.