For over 600 years Magicians and gamblers have used the glim.
The glim is a secret device used for glimpsing playing cards. The glim is sacred.
Now imagine a glim that is hidden in plain sight. It will never be detected let alone suspected. Glimpse any and every card in the deck at a moments notice. You can also glimpse words and/or pictures drawn by people.
An amazing tool for the Magician and Mentalist