Using Heat to Change Information
Pens with permanent inks have been used to sign documents, sign checks and in any case, it makes things become legal.
The Pilot Frixion Ball Point Erasable Gel Pens are pens that we should be concerned about. It is easy to remove information that was written by this pen by applying heat to the written word.
Once the information is removed you may replace it with whatever you chose to write. The information on a check that is sent to someone can be changed by applying heat to any part you would like to change.
Get familiar with these pens and be careful how you use them.
Watch a video about these pens.https://goo.gl/bLTasc