While using a fingerprint reader or scanner for security purposes obviously wasn't invented by Apple, this is yet another one of those cases where Apple took an existing idea, made it incredibly user-friendly, improved the hardware a ton, and now it's the standard on every phone.
To emphasize this point, Apple shared a great statistic: their average users unlocks their phones 80 times a day. Other reports state people look at their phones upwards of 130 times a day but those are less of the average and more the heavier users. Regardless, the simple act of logging into our phone via a secure form of login like passcodes or fingerprints is now taken for granted in much of Apple's ecosystem when, just a few years ago, anyone could have stolen my phone and have access to my personal information. Here again, Apple shared that 89% of their users with a Touch ID-capable device have set it up and use it.