Is it only five fails on TouchID to delete data? I don't have the option to delete the data enabled on my iPhone... but it often takes more than five tries to just get it to work on my finger that is legitimately registered in touchID.
After five failures the you cannot use Touch ID to unlock and will instead need the passcode to access the phone again. This means that any approach to fooling the fingerprint reader will need to be done within five tries.
