Best Way To Mark Cards

There are many people who are finding the best way to mark cards by themselves at home, now we introduce you a simple and best way to mark cards at home by yourself.
We offer the invisible ink pen to mark the cards by yourself, this invisible ink pen looks like a regular pen from its appearance. We put the invisible ink into the pen, you can use it to write marks. Used for cards marking, the invisible ink pen can mark numbers or letters on the back of cards. The cards marked by the invisible ink pen are called invisible ink marked cards that are useful for poker gambling cheat. You can read these juice ink marked cards with special marked cards contact lenses or UV invisible ink sunglasses.
If you own this invisible ink pen, you can mark any poker cards at any time you want, and you also can write the marks as you want.