If you are looking at your iPhone and feeling the full pull of the nostalgia this week, perhaps your soul is quietly celebrating the fourth anniversary of Apple’s acquisition of the firm behind Touch ID (AKA the feature that makes Apple Pay use possible).
For a bargain rate of $356 million, Apple grabbed up AuthenTec’s hardware, software and patents.
And with those patents, team Apple started work on building the Touch ID we all know and love today.