The advantages are:
No need to use the services of your assistant like in the original effect. Therefore, it can be performed in a 'one man show' which makes the effect all the more convincing. No need to use the nail writer. No need to switch the number card. No wastage of any material as the number chips can be repeatedly used in all your shows. The three variations explained in the eBook will help you to perform the same effect to the repeat audiences. Systematic way of posting of numbers makes the trick much easier. Templates in PDF format of all the required materials are included with the eBook which helps you to make the set at your end.