Laser pointers are not always safe to use

 Teacher - for class he is like an infinite pointer, so the two of you can easily trace on every corner of the blackboard in the classroom, an absolutely teacher-capable assistant!

Business person / conference speaker - for product demonstrations and meetings to explain, let your speech become arbitrary, communicate with customers in a more relaxed and natural way.
Hall / Tour Guide - When faced with "tentacles difficult and" objective and helpless, it can help you easily and aim accurately.

Field Travelers / Explorers - for outdoor adventures, pointing to distant destinations and giving a distress signal so you can have more fun and safety.

Amateur astronomers see an astronomical star, the green laser beam is emitted by a very beautiful green line, it is suitable for observing the night sky and can help you determine the position of the stars.

Industrial and with laser pointer for research purposes

Laser pointers are used in industry. For example, construction companies can use high power laser pointer to improve the accuracy of showing certain distances when working on large projects. They proved useful in this type of business due to their accuracy which saved them significant time. What is essentially a laser pointer can be built into an infrared thermometer to determine where it's pointing, or as part of a laser plane or other device.

They can also be helpful in scientific research in areas such as photonics, chemistry, physics, and medicine.

Leisure and entertainment possible with a laser pointer?

Entertainment is one of the other uses for lasers. The most common uses of lasers in entertainment can be seen in special articles used in laser shows. Clubs, parties, and outdoor concerts all use powerful red laser pointer with safety precautions, like in a drama. Laser shows are often extravagant, with lenses, mirrors, and smoke.

Laser pointers have few uses beyond actual pointers in the broader entertainment industry, however, and many locations prohibit access to those in possession of pointers as a potential hazard. In very rare cases, laser gloves, sometimes used as pointers, are worn by professional dancers at stage shows. Unlike pointers, these usually produce highly divergent, low-power rays to ensure eye safety. On one or two occasions, cues from magicians have been used as props in magic shows.

The laser pointer can be used for hiking or for outdoor activities. Higher powered laser pointers are bright enough to scare large wildlife, which makes them useful for hiking and camping. In these circumstances, a blue laser pointer can also serve as a handy survival tool as it can be used as a rescue signal in emergencies, visible to planes and other people at extreme distances both day and night. For example, on the night of August 2010, two men and a boy were rescued from the marshland after rescue workers discovered the red laser pen. Precisely aligned laser pointers are used as laser rifle scopes for aiming a firearm.

Some militaries use lasers to mark targets for aircraft at night. This is done to ensure that "friendly" and "hostile" targets are not confused. A friendly target can wear an IR-emitting device that is only visible for night vision purposes (e.g. pilots). To determine the exact position of an enemy fighter, they simply illuminate the target with a laser beam that is detected by the attacking aircraft. This can be one of the most accurate types of marker targets.