Optical card having optical grooves for access and wobbled marks
Optical record medium including a data region, an identification
Optical recording medium with region for identifying defective w
Optical signature system and method
Optical signature system destruction systems and methods
Optically readable code and method for communication
Optically readable coded target
Optically readable tag
Optically trackable tag
Optimal error-detecting, error-correcting and other coding and p
Orientation-indicating cyclic position codes
Orientation-indicating cyclic position codes
Orientation-indicating cyclic positional codes
Orientation-indicating machine readable coded data
Orientational disambiguation for self-clocking glyph codes
Package with aperture through product code
Packet bar code with data sequence encoded in address/data packe
Paper sheet discriminating apparatus and method
Pattern based elaboration of hierarchical L3GO designs
Pattern generating fonts and sheets of writing material...