With the implementation of the EU directive a tamper evidence solution must be provided for all pharmaceutical product packaging. There are numerous effects and possibilities to approach the requirement. Tovenca verifies with each customer individually the best, effective and also economical solution. We analysed dozens of adhesive formulations and created a transparent closing tag that doesn’t require any packaging design change. Tested on thousands of different varnished, coloured, laminated and otherwise treated box-surfaces, we achieved an extremely high rate of destruction or fibrous damage on the surfaces. An easy and affordable evidence proof that doesn’t increase packaging cost.