Simply pull up the app such as SpoofCard, TraceBust or Fake Call Plus. Take it for a test drive and you will see what I am talking about. The truth in Caller ID Act of 2009 makes it legal to spoof caller ID unless the intent is to defraud, cause harm or wrongfully obtain anything of value. So you can only imagine how hard this is to prove, however, the Federal Communications Commission are sucessfully prosecuting some cases.