Barakta has Shiny! New! bone-anchored sound processors hearing aids. Oticon have drawn heavily on the Mega-Global Fruit Corporation of Cupertino, USAnia for inspiration (particularly in the startup sound, packaging and Devil's Radio departments, if not the careful dodging of other people's patents). But the 'feature' that's relevant to this rant is that the 'off switch', in as much as they have one[1], is achieved by opening the battery compartment, so that the battery (a zinc-air[3] 675 cell in this case) may achieve effective air-gap isolation by pingfuckiting to some dusty corner behind the bed leg, across the aisle of the bus, or into the digestive tract (or recent output thereof) of the nearest canine.
They have provided the battery compartment with a screw-operated lock, which can be engaged with the supplied tweaker, for when they're used by small children, primary school teachers and the elderly, who can't be trusted not to lose or eat the batteries.
[1] There's a 'standby' mode which keeps the amplifier and DSP gubbins awake and active[2] with a null input, which serves adequately as a STFU button, but doesn't save power.
[2] Thus avoiding boot-up delay when you switch it back on.
[3] Cheaper and AIUI less deadly when swallowed than lithium cells.
