What will be the outcome if augmented reality glasses become pervasive?

What will be an ideal response?

If they become pervasive, it will be possible to make billboards and advertisements in public places that target each person individually, whenever you look at a billboard with these augmented reality glasses on, they will be able to replace the billboard's real-world advertisements with a different, virtual ad. Advertisers will be able to use this technology to make sure that they do not waste money advertising products to people who are unlikely to buy them.