Imagine a world with no keys to carry, no pass codes or PINs to remember, and no credit cards needed. The Nymi Smart Bracelet ($79) allows you to access your secured devices without any of those items. How does it work? The Nymi uses your unique cardiac rhythm to authenticate who you are. From there its motion gesture system it will allow you to control your computer, or smartphone. Proximity detection lets you unlock your car or house. It can hold your pin, credit card and account information so you can buy items with a wave of your hand at the grocery store or on your game console. The Nymi may eventually be the ultimate everyday carry tech and it’s available for preorder today. Need more info? Check out this [video_lightbox_youtube video_id=jUO7Qnmc8vE width=640 height=480 anchor=video] of the Nymi in action.