I know this isn't genealogy-related, but who wants to have to sort out stolen Nectar points when you could be doing a bit of FH research!
There's a spate of theft of Nectar points - mine all went the other day, even though I still had my card. Sainsbury's set up a new account and refunded all my lost points. But it was a nuisance.
There's a new bit of functionality on your Nectar account where you can "lock" the points making them unuseable, until you unlock it again.
KN