This plugin uses the touch Id found in iOS 8+ and iphone 5s(and above). Also supports Face id with iphone X (and above) with a NSFaceIDUsageDescription see build.setting for info
Limitations:Only works on iOS and "not" iOS simulator
--listener (Required)(function) this will return event.response. Responses are "success", "failed", "enter password",and "Does not support touch id"
--reason (Required)(string) this text will show up inside the pop and is used to explain why touch id is needed.