On the news locally they demonstrated how it works using a cell phone and putting in someone elses information which showed up on the phone being called. Apparently Telemarketers are using it to call homeowners pretending to be someone they know. You return the call and get the telemarketer.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….