★ Unlock Signal's screen without lifting a finger (from the
fingerprint reader on your phone that is now supported).
★ Choose unique sounds for your favorite conversations. If you like
it, put a ringtone on it.
★ A brand-new and fully revamped backup feature replaces the legacy
import and export options.
★ You can enable an optional Registration Lock PIN that will be
required in order to register your phone number with Signal again.