Sonar

On treadmills, runners have to manually adjust the speed of the machine. Perhaps they won't have to for too longer, however. Scientists at The Ohio State University have developed a prototype treadmill that detects when its user's running speed changes, and adjusts its own speed accordingly.

Maybe not as glamorous as drones that go faster or shoot beautiful images, but making them less likely to crash into objects is still critical to advancing the technology. Startup Panoptes' answer to this is a kit that can be slapped onto certain consumer drones to stop them running into things.

The Clever Buoy system uses sonar to detect sharks, potentially providing a more humane and reliable alternative to shark nets at beaches.

In the battle between man and fish, technology has swayed things to the humans' favor. Fish finders are probably the most prevalent use of technology in fishing, and FishHunter takes things one step further by incorporating Bluetooth and a smartphone into the fish-locating equation.

Scientists have copied the sonar system used by dolphins to locate prey, to create a type of radar that could differentiate between ordinary objects and things like explosive devices.

A new "Wi-Vi" system developed at MIT can see through walls to track moving people using low-cost Wi-Fi technology.

ReelSonar is a smartphone-enabled Bluetooth fish finder.

An Israeli zoologist plans on studying bat behavior by equipping captive-raised bats with GPS, ultra-sonic microphones, and other sensors.

Two shipwrecks have been located in the deep Atlantic off Ireland, each potentially loaded with millions of ounces of silver.

The Tacit is a wrist-mounted device that uses sonar to measure the distance to objects and provide visually impaired users with a 'view" of their surroundings through haptic feedback.

Virtual Cane is a kind of virtual flashlight or a handheld sonar, capable of recognizing physical objects up to 10 m (39 ft) from the user.

A team of radiologists and retired US Navy sonar experts have used technology developed for submarines as the basis for a new device which offers quick detection, diagnosis and monitoring of stroke.