Satellites and lasers can improve data security worldwide. But they can be used as intelligent surveillance systems.

The NASA solar sail called home from a distance. 

The solar sails are the tools that can travel between planets using the solar wind as a thruster. The same technology that is used in solar sail structures can used as the large-size radar, and radio telescope systems. That researchers can send to space. 

The solar sails can connected. And then those systems can rotate around the central point. That allows to creation of a large-size scanning radio interferometer. Another thing is that solar-sail technology allows to creation of large-size radar or ELINT satellites that can pull their antennas in the structure. 

The solar-sail technology can make it possible to create a communication satellite, that can have active or passive modes. The system can aim radio masers at that structure that can reflect it to the right position. In that model, the solar sail acts like an Echo satellite. But it can also have active mode, where it acts like a receiver transmitter. The large-size mylar structures can also have optical reflectors that allow to aim of high-power laser rays to the targets. 

This kind of system is one version of anti-satellite (ASAT) weapons. The ground-based lasers shoot laser rays at those mirrors that aim the laser rays into the satellites below them. This idea is sometimes debunked because the atmosphere absorbs laser light. But it is possible that using highly advanced acoustic technology the acoustic systems that base phonons can drill holes in the atmosphere, and laser rays can travel through that hole. 

Satellites can improve data security in many ways. The system can cut the data flow into pieces, that it sends through different channels. The system can use many data lines. Like cables, different satellites, and other kinds of things to cut the data flow into pieces. 

The use of different frequencies makes it hard to break the radio communication, especially, if the system cuts information into pieces, that it sends at the same time. Using the different frequencies. The system can also use optical and radio communication. The system shares data between radio and optical frequencies. 

Lasers are multipurpose tools. 

The lasers can make traditional eavesdropping methods ineffective. In the most secured forms, the laser systems can use hollow laser rays where the outer laser ray covers the signal-transmitting ray. That thing makes it impossible to see signals from outside. That thing makes it possible to create a communication line, that is secured. Another thing is that laser rays can used in lidar systems, mass spectrometers, and weapons.  

The laser vaporizes material in mass spectrometers. Then it can analyze its spectrum. The power of laser weapons is the only thing that differentiates them from mass spectrometers. The laser can act as a directed energy weapon. Or it can aim another weapon at the target. 

The same laser ray can used to transmit data and aim weapons to target. In modern laser aiming systems. The image-recognition system detects the target, and then the laser just flashes less than a second, marking the image that the weapon should hit. 

The laser system highlights the wanted target and gives pinpoint accuracy to the inertial, Imaging infrared (IIR) weapons. When laser marks the target the camera in the weapon takes an image of the target, and then the IIR system aims the weapon into it. Or maybe quite soon, the laser weapon and communication systems can connected. The strength of the laser determines its purpose. The same system can used in multiple missions by adjusting its power. 

https://scitechdaily.com/data-from-the-void-nasa-receives-laser-communications-from-140-million-miles-away/

https://scitechdaily.com/electro-optical-innovation-new-way-to-control-and-manipulate-optical-signals-developed/

https://scitechdaily.com/harnessing-sunbeams-for-space-travel-nasas-solar-sail-mission-successfully-phones-home/

https://scitechdaily.com/space-age-security-how-satellites-could-extend-quantum-encryption-globally/

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