KeyLines for Law Enforcement

Making sense of law enforcement data with link analysis technologies

A visualization of the individuals involved in the 2015 Paris attacks

The ability to find and prove incriminating links is at the heart of every successful police investigation and prosecution. Using network visualization techniques to uncover and understand those connections has been a priority for law enforcement bodies for many years.

Intelligence-led policing

Police forces have found their budgets are being squeezed – a combination of reduced income and increased responsibilities, especially around high-tech and cybercrime. In this environment, the ability to predict and prevent crime has risen to the top of the agenda.

This intelligence-led policing involves studying complex data patterns to understand evolving trends, predict behavior and stop crime before it happens. The modern police force has a wealth of data available to them, but an inability to interpret that data across agencies and silos has remained a huge barrier to effective operations.

Case Study: How one national police force uses KeyLines

This case study explains how KeyLines network visualization has been deployed by a major European national police force.

Read more

Network visualization for law enforcement software

One way of interpreting complex connected data is through network visualization. Networks are everywhere, and by analysing them we can find connections and trends which would otherwise be hidden, quickly turning raw data into useful and actionable insight. Some examples of applications of network visualization to law enforcement scenarios include:


KeyLines can be used to build interactive charts of people, events and connections as part of an investigation. These charts can be collaborative and interactive, helping police staff to find and understand new routes of enquiry and combine all knowledge into one central resource.

Understanding criminal organizations

Understanding the social structure of criminal gangs and terrorist cells is essential for combatting them. Without that knowledge, law enforcement agencies cannot know for certain if their surveillance operations are focussing on the ringleaders or just outlying players. KeyLines can be used to visualize vast amounts of communications data – such as telephone, email or social network records – through time. Additional Social network analysis measures can be applied to ascertain the most important people.

Understanding inter-gang dynamics

Following on from the above, network analysis can be used to understand the balance of power and relationships between multiple organizations, not just between individuals. This level of understanding would be virtually impossible if looking at all personal relations independently.

Resource allocation

A thorough understanding of data is essential for effective decision making. By using network visualization, law enforcement agencies can gain this understanding and optimize resource allocation decisions.

Exploring Lawful Intercept data with KeyLines

Visualizing communications data as a network is an intuitive and efficient way of uncovering data insight. Learn how KeyLines can make your lawful interception activity simpler, faster and more effective.

Download the white paper

From the blog

Bringing time-series data to life with KeyLines

We integrate KeyLines with a time series database (TSDB) to see what the advanced time bar features can do.

Mapping a connected world: The value of geospatial graph visualization

With KeyLines, exploiting geospatial information has never been easier. This blog post describes three compelling use cases to help you get the most out of connected data on maps.

Become Education: a recommendation engine for 21st century careers

In this blog post, we’ll see how Become Education use graph visualization, powered by KeyLines, to equip children with the skills and knowledge to design their own lives.

Visit the blog

Subscribe to our newsletter

Get occasional data visualization updates, stories and best practice tips by email