LifeSafer Ignition interlock is the leading ignition interlock provider in Marathon and home to “No-Call Install”, the first fully online installation booking tool. LifeSafer’s locations are conveniently located and our expert technicians are certified in FL to can handle all your ignition interlock device installation and calibration needs. LifeSafer has over 30 years of car breathaylyzer experience and has helped over 1.5 million people get back on the road again.