Think about how many times a day you use a password, key, card, or fob — if your day is anything like mine, it's probably in the dozens. What if we flipped the model, and you had one remote control for all of the places, devices and services you need to access?
While it may sound far-fetched, it actually exists today. It's called an identity signal — it acts as your secure digital proxy in the physical world, representing your interests as a human being and telling things: