A U.S. tech geek has implanted house keys and LED lights into her skin in a bid to “upgrade” her body.

Winter Mraz, 31, began augmenting herself after she suffered a serious car crash that fractured her back, both her ankles and knees.

Mraz, who works as an engineer in Britain, revealed that she had so many implants following the accident that she decided to take them to the next level. “One of my kneecaps is medically 3-D printed. That’s an implant,” she told Good Morning Britain.

“I have the contraceptive implant, which nobody blinks an eye at.”

Following years of surgeries, Mraz decided to pay for implants that would get rid of some of the worries of everyday life.

A microchip in her left hand opens her front door, like the chip in a workplace security card. A second microchip in her right hand stores a computerized version of her business card which she can send to people’s phones.

She also had magnets implanted into her fingertips. The engineer said these allowed her to sense electromagnetic fields at work, which helped her avoid touching live wires.

“My implants are proactive versus reactive,” she said. “Instead of waiting until something negative happens to me and then fixing it medically, I can now get rid of some of the worries I might have. Like, ‘have I forgotten my keys?’ I can’t forget my keys. They’re in my hand.”

Not all of Mraz’s augmentations are practical, though. She also has two flashing LED lights implanted in her forearms. They glow when she passes a magnet over them. Mraz told the BBC in October that she got them “because they are sparkly and I’m a magpie. I like things that light up.”

Mraz is one of a growing number of people who call themselves “transhumanists.” They believe they’re the pioneers of a new future in which all humans are welded with machines to make them faster or more intelligent. For now, the minor upgrades are little more than fun gimmicks.

However, some believe the body enhancements could one day eradicate diseases and disabilities. (SD-Agencies)