WhatsApp is launching a new security feature that’s so simple and useful, I’m surprised more messaging apps haven’t implemented it. Starting today, WhatsApp will allow you to lock the app using TouchID or FaceID (Android is on the way). You’ll have to use biometric security to authenticate access. For someone like me, who doesn’t mind lending his phone to others but would prefer they not snoop through my messages – or open one by accident – it could come in handy. It’s also useful if you don’t mind giving away your passcode for someone to, say, make a phone call,…
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