3D Code Stacked Transparent QR Layers

The patent transitions from 2D QR code stacking to 3D stacked QR code structure, utilizing the third dimension (vertical stacking) to dramatically increase information capacity. Multiple transparent QR codes are stacked with overlapping fields, where each field position across multiple layers encodes additional information bits through color combinations, achieving exponentially higher information density while maintaining a compact form factor.

The patent implements a nested structure where multiple transparent QR code layers are stacked and overlaid, with each layer's fields positioned to overlap with corresponding fields in adjacent layers. This nesting approach allows information to be encoded across multiple hierarchical levels (layers and field positions), maximizing information capacity within a confined spatial envelope.

The patent employs color-coded transparent fields in stacked QR code layers, where each field can exhibit different colors (e.g., cyan, magenta, yellow, clear) to encode information. The color combinations across multiple layers create unique optical signatures that are difficult to replicate, providing inherent counterfeit protection while using standard transparent materials and printing techniques that remain manufacturable.

The patent utilizes composite transparent materials with different optical properties (different colors and transparencies) for the QR code fields. These composite material properties create complex optical characteristics when stacked and viewed through multiple layers, providing security verification capabilities while using materials that can be produced with conventional manufacturing processes.