Robo-Vision

If they did a blue one too, you could read the 3D comics.

As part of the June 2, 2007, launch of Transformers film toyline, Target stores were home to a Robo-Vision promotion. Included in Target-exclusive Transformers toys is a Robo-Vision Decoder which reveal passwords printed on the back of these toys' packages. These codes can be used to unlock exclusive content on Target's website.

The following toys are part of the Robo-Vision promotion:

Arcee
Hardtop
Robo-Vision Optimus Prime
Signal Flare
Transformers Stratego (special Target edition)

The Target site also features an online version of the Robo-Vision decoder. Dragging the graphic across the screen reveals codes normally invisible. This decoder is also usable when viewing the Target exclusive movie prequel comic via the site; placing the decoder over comic panels in "Robo-Vision" reveals even more codes.