Cleromancy, sortilege, casting lots or casting bones is a form of divination in which stuff is thrown randomly on the ground, and the resulting patterns or forms are interpreted to tell the future.
Yes-no pens
Pens which can answer "yes-no" questions are widely used in divination and fortune telling, especially by New Age adherents. Their use is similar to the usage of pendulums for the same purpose (with the difference that a pendulum can also be used for spiritism). Another classical "yes_no" fortune telling method is the use of coins. There exist some websites which utilise software to simulate these "yes-no" pens to produce similar results on the computer screen. [1] (http://www.facade.com/yesno/)
Cleromancy, sortilege, castinglots or casting bones is a form of divination in which an outcome is determined by random means, such as the rolling of a die.
In this case, the casting of lots was implicitly looked down upon by the biblical authors, however, elsewhere in the Bible it was invoked as a legitimate means of determining God's wishes.
For example, it was through the casting of lots that it was determined by Jonah's crew that he was, in fact, the source of the storm they were enduring.
In his Treatise on the Cardinal Virtues, Thomas Aquinas concludes that the casting of lots to decide a matter is not sinful as long as chance and not the power of demons is thought to control the action of the dice.
As part of the scapegoat ritual, the Jewish priest castlots to determine which of two goats would be the bearer of the people's sins into the wilderness and which should be sacrificed upon the Temple altar.
The sailors of the ship he was on cast the lot to determine whose guilt was the cause of their present danger.