Smaller World (Bar Code Inspection)

Spitz adds CCD camera-based inspection systems may have a hard time complying with ISO because of its requirements for measuring a specific wavelength of light at a specific spot size, to ensure the measurement medium correlates closely to scanning equipment at the point of sale or end use.

Webscan's TruCheck system complies with a fixed-wavelength laser and a 6-mil spot size. Other devices which require contact to the sample, such as wands, achieve ISO compliance with LED light sources and filters.