Vigilance Control
The main safety failing with the basic dead man’s system is the possibility of the operating device being held permanently in position, either deliberately or accidentally. Vigilance control was developed to detect this condition by requiring that the dead man’s device be released momentarily and re-applied at timed intervals.
There has also been a proposal to introduce a similar system to automotive cruise controls.
A hybrid between a dead man's switch and a vigilance control device is a dead-man's vigilance device.
Read more about this topic: Dead Man's Switch
Famous quotes containing the words vigilance and/or control:
“What I am now warning the People of is, That the News-Papers of this Island are as pernicious to weak Heads in England as ever Books of Chivalry to Spain; and therefore shall do all that in me lies, with the utmost Care and Vigilance imaginable, to prevent these growing Evils.”
—Richard Steele (1672–1729)
“To try to control a nine-month-old’s clinginess by forcing him away is a mistake, because it counteracts a normal part of the child’s development. To think that the child is clinging to you because he is spoiled is nonsense. Clinginess is not a discipline issue, at least not in the sense of correcting a wrongdoing.”
—Lawrence Balter (20th century)