Crowds passing through Times Square will come across observation binoculars that are fixed at a certain point on a building.  At first, the user tries to use it as a regular observational binoculars but will find they can't move it so they see what its pointed at.

View from the binoculars (bottom) relative size comparability to other billboards and when viewed from street (top)

Insert in a magazine

Utilizing the page number from a magazine we can tell a piece of information about the Nano Puff using something that is already there, thus getting more using less.