A protocol for arranging the bars and spaces of barcodes for the encoding of numbers, letters and binary numbers.

Surface relief hologram

The most ubiquitous and popular type of hologram, mainly exhibiting a characteristic rainbow-coloured pattern. Surface relief holograms are mass-produced mechanically by embossing or casting a relief pattern or image into a thermoplastic film or a viscous coating on a...

Supply chain

Individuals or organisations involved in getting product from manufacturer to consumer.


The material or base – eg. paper or film – to which a feature is applied, or in which it is incorporated.

Structured Query Language (SQL)

The standard language used to communicate with relational database management systems (ie. systems which store and provide access to data points that relate to one another). SQL statements are used to perform tasks such as updating and retrieving data.