==Description:==This wall mounted hair dryer has two slots on either side of the switch. (One slot is partially covered by my thumb.) The bracket on the wall has two pointed prongs that go through the two slots and turn the dryer off if the user neglected to do so.


Mistake-proofing category: Mistake prevention
Setting function: Physical,
Regulatory function: Shutdown
Source: Off-the-shelf


Secondary Problems (side effects, weakness or concerns) with this example:


Sources of Supply:

See also:

{create links here to other examples that are comparable}