Barcode imagers (also known as digital or area imagers) read both 1D and 2D barcodes using sensors that ... Some CMOS camera types have 752 × 480-pixel arrays. Each pixel registers one of 256 ...

Since the introduction of native QR code scanning in smartphones, 2D barcodes have become the preferred method of sharing information.

Figure 1: A 1D array of degenerate cavities for simulating a 2D rectangular lattice in a magnetic field. Figure 2: Design of the auxiliary and coupling cavity for simulating with polarized photons.