And of course, users must download and install most native mobile apps in order to run them on their device.

CNN: Phone, tablet users spend more time with apps than Web

Native mobile apps are on the way but for now the service is accessible via smartphones and on iOS image capture is handled correctly.

FORBES: Connect

For Twitter to be able to keep the navigational container of its mobile apps native and fast, but to have instantly updatable HTML 5 modules and JavaScript libraries embedded within, is a great model for a platform that can test and deploy these elements with a minimal disruption to users.

FORBES: Did Twitter Buy Clutch.io To Build A Self-Service Platform For Advertisers?