Clever idea but I think the ad space is better utilized delivering the message as legibly as possible within that space. "Abused? Call NNN-NNN." This would increase effective range, making it harder for the abuser to evade. You can argue that it makes it easier to evade, but in a busy subway, or other closed environs, legibility is hard to suppress. They can also mix and match font and background colors to make it harder for the abuser to detect Banner patterns for avoidance. It would also be smart if the campaign could pseudo-randomize display spots, again making it harder to consciously evade the message.
If we had to go with the lenticular approach, they could also experiment with sound frequencies that kids are sensitive to, but adults would struggle with. That could be a cool hailing beacon to couple with the display.
If we had to go with the lenticular approach, they could also experiment with sound frequencies that kids are sensitive to, but adults would struggle with. That could be a cool hailing beacon to couple with the display.