Snapchat debuts tap-to-view controls promising 'no more tired thumbs'

Social app's latest update is designed to make long videos less annoying, but it's also adding two-factor authentication to protect users

Social app Snapchat hopes its 100 million daily active users will give the thumbs up... to spending less time holding their thumbs on their smartphone screens to see photos and videos.

The company's latest app update introduces a new "tap to view" control, which replaces the "press and hold" user interface that's been used since Snapchat's launch in 2011.