How to Enable Two-Factor Authentication for Instagram

Two-factor authentication is a more secure way of protecting your online accounts. You really should enable it on every service that offers it, and here’s how to turn it on for Instagram.

Two-factor authentication is so named because it relies on two separate factors to verify your identity to an online service—something you know (your password) and something you have (your phone, tablet, or PC). To log into an account, you need not only your password, but also a one-time code that’s either generated by an app on your device or sent to your device via some service like text message. Even if someone steals your email and password details, they still can’t log in to your accounts.

Open Instagram and head to your profile. Tap the gear icon at the top right to get the “Options” screen.

To enable two-factor authentication, you need to have a phone number attached to your Instagram account. If you haven’t added a phone number already, tap “Edit Profile” and then tap the…

Futuristic New Mastercard Includes a Built-In Fingerprint Scanner

You can put down the pen and forget your PIN with Mastercard’s newest credit card. As The Verge reports, the company is testing out a credit card with a built-in fingerprint scanner that allows customers to authorize their payments with the swipe of a digit—no PIN or signature necessary.

The new Mastercard is just as slim as a regular one, and it works with all existing chip-and-PIN readers. To get one of the fancy new cards, you’ll need to register at a branch. Your fingerprint will then be converted into an encrypted digital template, which is stored on the card. To use the card, you’ll just dip it into a store’s card reader as normal. But instead of entering a PIN, you’ll be prompted to place a finger or thumb on the embedded sensor on the card’s top right corner in order to…