Information Technology in a Global Society

ITGS textbook cover Information Technology in a Global Society for the IB Diploma is the first textbook designed specifically for the IB ITGS course. Unlike the general computer science textbooks currently used by many ITGS teachers, this book is written specifically with the IB ITGS course requirements in mind, and covers all components of the new ITGS syllabus (first exams May 2012), including the Higher Level (HL) topics. It is fully illustrated with over 300 photographs, diagrams, and charts.

The book is available from,, and a variety of book shops.

This site supports the book with additional lesson plans, exercises, links to useful software, and other ITGS teaching resources. You can also view a detailed table of contents and download a free sample chapter.

Latest updates

Digital data preservation

Digital Preservation and Restoration: Historic sites and documents

Digital preservation refers to the use of digital technology to prevent the degradation of works of art. Digital restoration involves restoring these works to their original condition. Works might include statues, ancient sites, historical documents and manuscripts, paintings, and even films. This topic has many close links with the digital media topic. 3D printing is often associated with digital preservation, so it is also covered here.

Updated: 2018-03-28
Sports technology

Sports technology: Cricket, Tennis, and Football

Hawk Eye is a system used to assist the referee in several sports, including tennis, cricket and football. Haw Eye Sensors expands upon the original Hawk Eye system using a combination of video camera and sensors embedded into the pitch. Technology in Tennis, a blog by Jason Tsang, contains useful diagrams of the tennis Hawk-Eye system. The video Inside Hawkeye explains a bit more about how the system is used.

Virtual Eye is a similar system used in cricket to assist the third umpire and provide data analysis. Virtual Eye maker owns up to fault is an article about problems with Virtual Eye system.

In football, GoalMinder is system to detect whether a goal has been scored; FIFA want goal line technology to be deployed in future matches, and in the UK the Premier League approved the use of Hawk-eye goal-line technology for the 2013-2014 season. This video shows how the Hawkeye system is set up for a football match.

The video Badminton Hawkeye challenges is a good example of just how hard it can be for a human referee to make accurate judgements in modern sport.

Updated: 2018-03-28
Game addiction

Psychological considerations: Internet and game addiction

Computer gaming addiction raises many potential negative health, psychological, and economic impacts. The problem has become so bad in some countries that extreme measures have been taken to try to combat the issue:

Updated: 2018-03-28
Wild fire GIS

Wild Fire Geographic Information Systems (GIS)

These great resources from the United States Forest Service (USFS) deal with how IT is used in wild fire prevention, prediction, and management.

The USFS main page contains links to the following resources:

The Role of GIS in the Aftermath of a Wildfire explains how these systems can be used to quickly assess the scale of damage.

Updated: 2018-03-28


Phishing examples

Advice for avoiding phishing scams

Updated: 2018-03-28
Passwords and biometrics

Passwords, biometrics, and two-factor authentication

The video Secure Passwords Explained by CommonCraft is a good introduction to this topic. Why passwords have never been weaker - and crackers have never been stronger and How I Became a Password Cracker (ARS Technica) explain the security threats facing passwords.

Two-Step Verification is inconvenient, but more secure (NY Times) and Google's Alternative to the Password (MIT) offer alternatives to passwords.

Biometrics (BBC) are often hailed as a better authentication mechanism, and modern systems can even recognise users by the way they walk (Science Daily).

Problems with biometrics

Contrary to popular belief, biometrics systems can be fooled. For example, by using fake silicone fingers (BBC) and even plastic fingerprint surgery (BBC). Voice recogition technology can also be fooled: the BBC fooled HSBC's voice recognition security system for online banking, for example. In 2018 an AI algorithm was revealed that could imitate a person's voice based on only a few samples.

Social and ethical issues

Biometric facial recognition systems can raise privacy issues as they are capable of surveillance without subjects' knowledge or permission - one such example is in the 2001 Super Bowl (The Register). The article You Cannot Encrypt your Face examines this issue in greater detail.

Another potential issue with biometrics is security - ironically there are several major security concerns about using such technology. This Wired article explains the concerns and how they affect stakeholders in various fields.

Updated: 2018-03-28
You can view previous updates to the website here.