Tim Shank can guarantee he’ll never leave home without his keys. Why? His house keys are located inside his body. Shank, the president of the Minneapolis futurist group TwinCities+, has a chip installed in his hand that can communicate electronically with his front door and tell it to unlock itself. His wife has one, too.

“You have mental checklists as you’re coming and going out of your home,” Shank says. “One of those things is my wallet, keys, all those things I have with me. Once you start to eliminate all those things, you start to see all the mind space it actually clears not to have to worry about them.” READ MORE