I’m not entirely sure if it’s true – you can always tinker with these kinds of things – but apparently Apple tested the Touch ID button since the iPhone 4S at least. Just a reminder, it was only integrated into the iPhone 5S, two years later.
I’ll share a few images taken from the video seen in the tweet. LinxinSamy promises another video… someday.
iPhone 4S
iPhone 4S
iPhone 4S
