Knife crime is endemic in the UK, at least according to our media. Scotland has a particular problem with this, which is why the police there are field-testing kevlar-armoured metal-detecting gloves. The idea being that they can be used to scan a suspect for concealed knives without the need for a separate gadget, and protect the wearer should a knife be present (and its bearer willing to use it). Fellow body-piercing afficionados may want to get their disclaimers prepared in advance…