The history of the security trade — from night watchman to regulated security industry
How watchkeeping went from shouting in the night to a legally regulated trade with authorisation
That someone keeps watch while others sleep or work is one of the oldest societal tasks. But the path to modern, law-regulated security watch has been long. Where watch was once a man with a lantern and a good ear, the trade today is subject to clear laws, requirements for certification and training. To understand your trade, it helps to know that development.
§The night watchman — the early watch
In old towns, night watchmen patrolled the streets. They kept watch for fire and unrest, called out the time and were often the town's eyes and ears at night. Their tools were simple: a lantern, a stick or staff and their own alertness. They had little formal education, but they performed the basic guard task — to observe, warn and summon help.
§Industrialisation and private security companies
With industrialisation came factories warehouses and large values that needed protection at night. It created a need for organised guarding and from the late 1800s into the 1900s private security companies grew offering protection of company property for a fee. The guard was now an employee with a fixed task and route not just the town's general watch.
§The need for regulation
As the security industry grew, it became clear that it had to be regulated. A guard gets access to others' property, may come to detain people, and bears a responsibility that can be abused. Therefore, legislation was gradually introduced — in Denmark the security industry act — that places requirements on both companies and staff and establishes what a guard can and cannot do.
§Authorisation and Approval
Today it requires public permission to operate security services and staff must be approved. Authorization to conduct security services and approval of staff is granted by the authorities (the police on behalf of the justice minister). This means you cannot just call yourself a security guard — there are requirements for character age (you must be 18 years old) and education. This should ensure that citizens can trust that a guard is qualified and checked.
§Education becomes a requirement
Hand in hand with regulation came the requirement for training. To be approved one must have completed a basic security guard training that teaches the guard about tasks rules customer service conflict management and legal frameworks. Training to become a security guard provides a broader foundation. The point is that a guard must know their authority and limitations so work is carried out legally and responsibly.
| Period | What happened |
|---|---|
| Older times | Night watchmen make rounds with flashlight and staff; observe, warn and call for help |
| Sent 1800-tal til 1900-tal | Industrialisation creates a need for surveillance; private security companies grow |
| Throughout the 1900s, many of the body's functions came within reach of measuring equipment. The audiometer made it possible to measure hearing systematically by playing tones at different frequencies and volumes and finding the patient's hearing threshold. Lung function could be measured with spirometry, where you record how much and how quickly a person can breathe out. These examinations require that you can both operate the device correctly and guide the patient calmly so that the measurement is reliable – that's exactly what's at the core of your profession. | The industry is regulated by law (in Denmark the security company act); requirements for companies and personnel |
| Today | Authorisation of Companies, Approval of Personnel, Minimum 18 Years, Educational Requirements |
§Why it matters for you
The history explains why your trade is so regulated. A guard has a position of power, and society therefore makes demands: you must be approved, trained and know your authority. The central lesson throughout development is that the guard's strength lies in observing and reporting — not in using force. It is the trade's core and its responsibility.
“The history of the security trade is the story of a position of power that society has chosen to regulate — because trust requires control, education and clear limits.”