The iOvilus produces speech based on changes to sensors in the iPhone or iPod Touch. Simply, the idea is that an outside force can affect a change that registers a response. 
Instrumental Trans Communications "ITC" Device is used by the investigator to communicate with a spirit by asking questions or telling it to interact.
Gear Images IOvilus25
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Saint Michael the Archangel,
defend us in battle.
Be our protection
against the wickedness
and snares of the devil.
May God rebuke him,
we humbly pray;
and do Thou, O Prince
of the Heavenly Host
by the Power of God-
cast into hell,
satan and all the evil spirits,
who prowl about the world
seeking the ruins of souls