AI “deepfakes” have become a cheap way to digitally alter faces. Just look what they did to Henry Cavil’s Superman mustache.

AI that identifies people in crowds is already pervasive in China—and now it’s augmenting police officers’ eyes, too.

Smart specs: The Wall Street Journal says the hardware, made by LLVision, sends data from its camera to a handheld device, where AI software crunches through an offline database of 10,000 pictures of suspects in about 100 milliseconds to help officers spot criminals. It’s unclear how accurate it is.

How they’re used: The glasses will be used to monitor busy crowds in China as citizens travel for next week’s Lunar New Year. But the People’s Daily newspaper says they’ve already been tested in Zhengzhou railway station, catching seven wanted criminals and 26 people travelling on fake ID.

Meet OceanOne, a robot avatar that lets humans explore deep under the Ocean’s surface, without any of the dangers or time limits associated with diving.

While a human diver is constrained by pesky things like air and pressure when doing underwater research or excavations, a robot can stay underwater for much longer, collecting samples in hostile underwater environments.

OceanOne was tested at the archeological site of the shipwreck La Lune off the coast of France. La Lune, a flagship that sank in the Mediterranean in 1664. It lies under 300 feet of water, far beyond the reach of recreational SCUBA divers, who limit themselves to 130 feet.

It takes an immense amount of processing power to create and operate the “AI” features we all use so often, from playlist generation to voice recognition. Lightmatter is a startup that is looking to change the way all that computation is done — and not in a small way. The company makes photonic chips that essentially perform calculations at the speed of light, leaving transistors in the dust. It just closed an $11 million Series A.

The claim may sound grandiose, but the team and the tech definitely check out. Nick Harris, Lightmatter’s CEO, wrote his thesis on this stuff at MIT, and has published in major journals like Nature Photonics several papers showing the feasibility of the photonic computing architecture.

So what exactly does Lightmatter’s hardware do?

Equipping nuclear submarines with AI would give China an upper hand in undersea battles while pushing applications of the technology to a new level.