Soon, new iPhone owners will be able to use a fingerprint to access a phone or buy something on iTunes. Apple’s introduction of this fingerprint technology adds a nice layer of security and a bit of convenience for those whose fingers are too tired to type in a four-digit password. But soon, we will be interacting with a lot more devices that have no screens, and biometrics will be the logical way to secure our data. Companies have already developed ways to identify you, from your fingerprints to your heartbeat. And while these methods certainly seem more effective than simple (and often easy-to-hack) passwords, it’s a little worrisome that we’ll essentially be sharing even more personal data, right down to our person. In order to give us the promise of more security, companies will want to know even more about us. It feels like we’ve passed a point of no return. So much about us is stored in the cloud (our finances, our communication, our social lives) that we can’t turn back. The only way to protect what you’ve shared so far is to share some more. Protect your data with a password. Protect the password with some secret, personal questions. Protect all of that with your fingerprint or your heartbeat. Before long, you’ll have to give a DNA swab to access a collection photos you took yourself. It’s a trend worth watching. The last decade was about sharing. The next decade will be about protecting.