The fingerprint sensor is the important one, because thats where the secure enclave is, that's where your fingerprint is stored, it's the lynchpin to Apple's en

The fingerprint sensor is the important one, because thats where the secure enclave is, that's where your fingerprint is stored, it's the lynchpin to Apple's entire security system. The more access to any parts of that system, the more it needs, the more software it has, the more likely that software is to have bugs, the more likely bugs there are, the more likely it is that there will be an exploit, and the more likely exploits are, the more likely it is that your fingerprint will get leaked, or that the security will be broken. It pains me that TouchID sensors can't be reused/it's harder, because of the waste, but as a protection measure, I don't see any way around it.