LifeSafer Ignition interlock is the leading ignition interlock provider nationwide and home to "No-Call Install", the first fully online installation booking tool. LifeSafer's locations are TX certified and our expert technicians at 4677 Preston Rd can handle all your installation and calibration needs. LifeSafer has over 30 years of ignition interlock experience and has helped over 1.5 million people get back on the road again.