Yellow Jacket case
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Case turns phone into shock stun gun

A US firm has unveiled a smartphone case that turns the handset into an electric shock stun gun with a 650,000 volt sting

US firm Yellow Jacket has caused a stir at the Consumer Electronics Show by unveiling a smartphone case that doubles as an electric shock stun gun.

The "self-defence" feature packs a 650,000 volt sting, and comes in a range of colours including pink. Similar devices are illegal in many countries including the UK.

BBC North America technology correspondent Richard Taylor asked a spokeswoman about the safety implications.

You can follow Richard on Twitter at @RichTaylorBBC.