"Between our laptops, smartphones and tablets, we already use technology to connect ourselves in ever-advanced ways to the world. Indeed, the line between technology and reality has become increasingly blurred. Projecting into the future, it's not hard to imagine the line disappearing entirely — when humans and technology merge and become indistinguishable. Some philosophers and scientists think this kind of "technological singularity" could be achieved within just a few more generations. In other words, we're all well on our way to becoming cyborgs.

In fact, for some of us that future has already arrived. Cyborg technology has advanced to the point where it's safe to say that bionic humans are no longer the stuff of science fiction. They're here now.

Don't believe it? The following are real-life cyborgs, individuals who have willingly become part-human, part-machine. All of them are inspiring harbingers of the future and none of them are “Terminators” — at least not yet.

Neil HarbissonNeil Harbisson

Although artist Neil Harbisson was born with achromatopsia, or extreme colorblindness that meant he could only see in black-and-white, he is now capable of experiencing colors beyond the scope of normal human perception.

How is this possible? Harbisson is equipped with a specialized electronic eye, or eyeborg, which renders perceived colors as sounds on the musical scale. In other words, his device allows him to “hear” color. He has become so adapted to this device that his brain has formed new neural pathways that allow him to develop an advanced kind of perception.

“At the start, I had to memorize the names you give to each color and I had to memorize the notes, but after some time, all this information became a perception,” said Harbisson, in a recent TED talk. “When I started to dream in color, I felt the software and my brain had united.”

Harbisson is so passionate about his status as a cyborg that he has founded the Cyborg Foundation, an international organization to help other humans become cyborgs.

Kevin WarwickKevin Warwick

A professor of cybernetics at the University of Reading in the United Kingdom, Kevin Warwick takes his work seriously. So seriously, in fact, that he and his work have become one. Warwick is the founder of Project Cyborg. Using himself as the guinea pig, he's on a mission to become the world's most complete cyborg.

Warwick has been experimenting with various electronic implants since 1998, when he "installed" a microchip in his arm that allowed him to operate doors, lights, heaters and other computers remotely as he moved from room to room.

You can view his story and check out some of his new capabilities in this video:

Jesse SullivanJesse Sullivan

Cyborg technology is perhaps most immediately useful for amputees. In the future we might imagine a world where every amputee is equipped with new robotic limbs that are connected to their nervous systems, capable of being operated just like normal limbs. (Think of Luke Skywalker's robotic hand.)

Jesse Sullivan is a pioneer in this respect. He effectively became one of the world's first cyborgs when he was equipped with a bionic limb, connected through a nerve-muscle graft. Not only can Sullivan control his new limb with his mind, he can also feel hot, cold, and the amount of pressure his grip is applying.

Jens NaumannJens Naumann

After a pair of horrific accidents, Jens Naumann was struck blind in both eyes, but he never gave up hope that he would someday see again. That dream became a reality when, in 2002, Naumann became the first person in the world to receive an artificial vision system. His electronic eye is connected directly to his visual cortex through brain implants. Unlike with other cyborg implants, which translate visual information into another sense such as sound or touch, Naumann actually "sees" the world. Though it has its limits (he can only vaguely see lines and shapes), his vision has been technically restored.

Looking to the future, it's possible to imagine artificial vision systems that allow users to see in wavelengths beyond normal human perception. (Perhaps someday, after the inevitable cyborg takeover, we'll all be able to see in infrared.)

Nigel AcklandNigel Ackland

After losing part of his arm during an accident at work, Nigel Ackland got an upgrade. His incredibly advanced robotic prosthetic might be the closest thing to “The Terminator” that exists today (it's also eerily reminiscent of Dr. Claw from “Inspector Gadget”).

Ackland controls the arm through muscle movements in his remaining forearm. The range of movement is truly extraordinary. He can independently move each of his five fingers to grip delicate objects, or even pour a liquid into a glass. He is even equipped with one alarming grip called the "trigger grip."

You may have to see it to believe it. Check out Auckland's full range of motion in the video below:

Jerry JalavaJerry Jalava

Jerry Jalava is the perfect example of how you don't need to be a robotics mastermind to become a cyborg; you can pretty much do it yourself. After losing a finger in a motorcycle accident, Jalava decided to embed a 2GB USB port into his prosthetic. It doesn't upload information directly into his nervous system (ala “The Matrix”), but it's at least more useful than a USB keychain.

Claudia MitchellClaudia Mitchell

Claudia Mitchell became the first woman to become a cyborg when she was outfitted with a bionic limb. Her robotic arm is similar to the one installed on fellow cyborg Jesse Sullivan. The limb is connected to her nervous system, allowing her to control it with her mind.

The range of motion is extraordinary, allowing her to use it for "cooking, for holding a laundry basket, for folding clothes — all kinds of daily tasks." (Or, perhaps someday, for arm-wrestling?)

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Click for photo credits

Photo credits:

Neil Harbisson: Wiki Commons

Kevin Warwick:element14/YouTube

Jesse Sullivan:AbilityRIC/YouTube

Jens Naumann:Jens Naumann/YouTube

Nigel Ackland: jonmillsswns/YouTube

Jerry Jalava:diagonaluk/YouTube

Claudia Mitchell: Getty Images