Hm, how about practice on space junk now in orbit around earth? Less distance means you need less precise aim, and you start making a dent in all the junk in orbit. In addition you don't have to wait until there is something in range to practice.

Like the recent faster than light that turned out to be a loose cable, lets see if others can duplicate those results.

The device works by replaying your voice with a slight delay. I envision a counter device that will play white noise, or maybe eventually even record your own voice and cancel out the remote delayed voice so that you never hear it.

By the same argument you could say that all the geosynchronous satellites are running in tandem with each other, so they must be spying on each other. While it is possible, I'd say a more likely reason is that whatever the two of them are doing up there, they are observing the same areas around the world.

The article I read, which was many years ago, long before the internet, said that the mask was normally clear, but turned opaque when it sensed a nuclear flash, and then turned back when it was over. The test subject said it was so fast he didn't even know that it worked at first. Therefore the user would have normal vision, but all the high power flashes would be blocked.

If I remember correctly, air force pilots used to have special googles that could turn opaque very rapidly to protect the pilots' eyes from optical damage from nuclear blasts. I wonder if such technology could be adapted to protect against such light dazzler devices.

Its the perfect setup for a Star Wars joke.

Hm, I sense an aftermarket for infrared filters. I also wonder how long before hackers start leaving infrared transmitters all over the place to annoy anyone with an iphone.

If there is or may be a problem, then develop a standard for both the electronic device maker and the navigation system maker can work with. I'm sick and tired of airplane makers saying that everyone must shut down all possible electronic devices or the airplane will crash into the ocean Does that include pace makers? How about artificial limbs that are electrically powered? Navigation systems should be defined to work with a given amount of noise on various frequency bands. It is not reasonable in today's world to design a system that assumes that the only RF transmitter for 100 miles around is the proper transmitter. Think of what a terrorist could do if they find such a vulnerability that can let them remotely down an airplane.

Conversely, electronic device makers must start shielding their equipment and start certifying that they meet this same standard. I've seen too many devices that have the EMF of a telsa coil and wipe out any other wireless device within 30 feet. One device was not even a wireless device. It was a street light that ran on 2.4Ghz, and wiped out WiFi whenever it was on.