Is the touch finger print sensor or the home button of the iPhone 5s prone to break?

I'm consodering buying an iPhone 5s but I've heard it can be very expensive to fix the sensor or the home button. Are these prone or easy to break?

Mine has yet to break and I've had it for almost a year. If it breaks within the first year the apple warranty should take care of it. But they're great phones so I recommend getting one.

Never had mine break