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I’ve seen concept robots before that are meant to go through fires, like theOmnitread.

The Firegard doesn’t have the snake-like construction of the Omnitread, but it does have an interesting wheel construction.

Hopefully, those star-shaped wheels are sturdier than they look, because I’m not certain how they could be bent in such a manner. Clearly, they are designed to go over burnt rubble in a building. On the “head” of this guy is a camera to transmit what it sees to the fire department, so they can figure out what to do in the inferno.

I’ve always noticed that these fireproof robots with the cameras seem to have a design flaw: they appear to be too slow. Both the Omnitread and Firegard look durable enough to go through the flames, but by the time the firemen get the footage and calculate a response, I’m not certain whether a life could be saved.

I mean, by the time you get it set up with the transmitter, it will slowly crawl through a burning building that has probably been on fire for quite a while. Assuming that it sees someone, how long will it take to formulate a rescue plan?

Well, the technology had better get faster in order for this to be practical.

Surely this one is straight out of the movies or some superhero comic book? You would certainly think so, but this highly effective spray can turn opaque paper temporarily translucent, allowing you to view the contents of an envelope without ever actually opening it. Thirty seconds later, the envelope will return to it’s original state, leaving no marks, discoloring or indeed any other indications that it may have been tampered with (left image)

Another spray - Clue spray - is designed to leave an invisible film on any surface, which when touched, is transferred to a person’s hand or clothing. Looking for clues or a suspect? Then look no further. Unknown to the victim, the spray remains for up to five days, even if the hands, for example, are washed repeatedly. The spray can’t be seen by the naked eye, but shows up as fluorescent under ultra-violet light (right image)

These kinds of cameras are familiar to most of us from movies and TV, but they do actually exist. Tiny video cameras are concealed in the frame of the sunglasses and in the front of the unremarkable looking baseball cap in these pictures.

This is isn’t the first spy camera I’ve come across that’s placed inside a belt buckle, but this is definitely the most classy way to pull it off. Nothing says elegant like a Playboy Bunny belt buckle. Then to give it a whole new level of chic, you throw in a spy camera right at waist height. With this belt you’ll be ready to go for your next night of expensive strippers and keep up your reputation as the local peeping tom.