German Laser2000 offers the Rad-Op100 and Rad-Op1000 optical wireless network bridges.
The devices can be used to connect two buildings via 1Gbit/s through windows, making the system very easy to install.
The data transfer is supposed to be secure and reliable. The Laser Bridge range is 20-120m.
More details on Laser2000 (German). First seen on Random Good Stuff.
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