Usage and Barcode Types
Barcode=optical machine-readable representation of data relating to the object to which it is attached.
Originally barcodes systematically represented data by varying the widths and spacing of parallel lines (bars), and may be referred to as linear or one-dimensional (1D). Later they evolved into rectangles, dots, hexagons and other geometric patterns in two dimensions (2D). The ISIC serial number or the student’s details are encoded in Barcode. The Barcode is used to control access in and around the university’s facilities e.g. cafeteria, class rooms, library, etc., and verification such as in campus shop, copying machine, etc.
There are various types of Barcode used in various degree, but below are the most commonly used Barcodes worldwide:
UPC (Universal Product Code)
Used in retails worldwide. International standard is ISO/IEC 15420. It encodes only numeric data, up to 12 characters.
Used in various sectors e.g. logistics (tracking), automotive, retails, etc. International standard is ISO/IEC 15417. It encodes 128 Characters (A- Z, a-z, 0 – 9, basic punctuations, space)
Used in various sectors e.g. logistics (tracking), automotive, retails, etc. International standard is ISO/IEC 16388. It encodes 43 Characters (A- Z, 0 – 9, -, . , $, /, +, %, and space)
QR (Quick Response) Code
Used heavily in marketing because it can also encode URLs, images, music, emails, in addition to vast amount of characters and character types. International standard is ISO/IEC 18004
Applications & Advantages
Most common uses of Barcode are:
- Access control
- Usage tracking
The main advantages of Barcode are:
- Simple technology and easy to implement
- Low investment
- Widely available
Points to consider:
- Limited functionality
- Low security level
Nowadays, you can buy off-the-shelve Barcode readers easily. A quick search on the internet will show you prices. You can also download Barcode reading application for your smart phone for free.