IStake

The iStake is a fictional weapon featured in the HBO television series True Blood. It first appeared in the third episode of season five, "Whatever I Am, You Made Me".

The iStake is a control device attached to an assembly of straps that fits around the chest and abdomen of an individual. Designed primarily for vampires, the iStake releases a miniature wooden stake, which impales a vampire's heart, meting out the True Death. The device is triggered remotely from a user's iPhone. According to one of it's users, Molly, "...there's an app for that".

In 2012, Molly - a member of the Vampire Authority - fitted renegade vampires Bill Compton and Eric Northman with iStakes in order to insure their loyalty to the Authority's goals.

Presumably, the iStake is manufactured by Apple, Inc., which is also known for developing popular computer devices such as the iPhone, the iPod and the iPad. This is not addressed in the TV show however.