schreiner medipharm, a germanybased global provider of specialty pharmaceutical labeling solutions developed special void effects integrated into the label for anticounterfeiting purposes. it prevent relabeling of product packs as well as alteration of variable product data. when the label is detached from the surface, an irreversible, previously hidden message or pattern appears, making the label unfit for reuse and therefore immune to tampering. void effects reliably indicate fraudulent reuse of previously used containers or alterations of variable data. this simple, yet effective tamper protection enables pharma manufacturers to safeguard their products from illegal use, as well as shields patients from the risk of original drugs being replaced with inferior ones. these labels with void effects can be incorporated into existing marking labels and designs.