The requirements to become a security guard vary by state or country, though they are generally much more relaxed than they would be for a full law enforcement certification. In most cases, security guards have no more power or authority than the average citizen and thus may require very little specialized training. In other cases, if a security guard is armed or working in a highly technical environment, more training is nearly always required.

To become a security guard, a person must usually meet some minimum requirements including age and education. At the very least, a person must at least be 18 years old in most cases. Also, a completion of high school or an equivalent is usually required to become a security guard. However, these requirements vary from employer to employer.

Depending on the situation, some states may require specialized classes for anyone who wants to become a licensed security guard. Licensing may not be required in all cases, but does add some credibility to the guard's authority. The classes usually review such issues as property rights, detention of suspects and other criminal justice elements. This class, or these classes, can usually be completed in just a few weeks.

In some cases, such as those working in retail outlets, very little other training will be necessary in order to become a security guard. For example, some guards may simply patrol parking lots or keep an eye on things at the door. In such cases, very few specialized skills are required. At most, what may be required in these situations is a valid driver's license.

To become a security guard authorized to carry a weapon, some additional training will also be necessary. This will obviously center around weapons handling and safety. In some cases, even a psychological profile may be required. Pay for armed guards is usually higher than it is for unarmed guards.

In other cases, highly technical training and surveillance techniques can be required in order to become a security guard. These applications are especially important in casinos and some museums. In these situations, substantially more training may be required. In casinos, for example, not only will guards learn about surveillance technology, they will also be taught some of the most common cheating techniques. In accordance with that training and expertise that is needed, salaries are usually higher in these applications.

Those looking to become a security guard generally do not do it for an extremely long period of time, unless they are in one of those highly technical applications. Many security guards working retail or guarding warehouses may not make much more than the required minimum wage. Still, for those looking for part-time employment, or are using the position in preparation for another career move, it may be a good occupation.