An alarm may be annoying but, face it, most alarms are your friend. The alarm clock in the morning - without which you'd lose your job. The smoke detector. The fire alarm. Now most us don't carry an alarm with us, but for some people, it's a very positive idea. Recently, my wife was in a nursing home on an errand of mercy when suddenly this loud alarm went off. Immediately, a nurse came running to a door where she intercepted one of their elderly residents who was headed for that door. The manager explained that some of their residents are afflicted with serious memory loss or disorientation, so much so, that they have left the building and wandered off, not knowing where they were - including right into the middle of the road! So the woman who triggered the alarm has been fitted with a special bracelet - one that triggers an alarm whenever she is on the edge of a possible danger zone. Apparently, she does remember what the alarm is for. When it went off, she instinctively stopped where she was. That alarm could literally save her life.