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Our Multilingual Customer Care Center is available 24/7 to answer your questions.
Smart Start’s FLEX Ignition Interlock Saves You Time and Money
The handheld device, which is about the size of a smartphone, has a sleek, stylish design with an intuitive interface. FLEX™ is powered by our patented FLEX-Cal™ technology which enables the pre-calibrated module to be quickly replaced.
New Stop-N-Swap Locations
Only Available in Arizona and Missouri
FLEX’s innovative design is sleek and stylish
For nearly 30 years, our Ignition Interlock Devices have been known for easy, dependable operation and intuitive design. But FLEX takes Ignition Interlock to a whole new level.
Its futuristic style fits naturally and discreetly with any car interior. FLEX is designed to be compact and comfortable in your hand. And its simple, three-button interface offers the easiest operation of any Ignition Interlock on the market.
During the pre-calibrated FLEX-Cal module replacement process, the FLEX headset is never removed, ensuring that the licensed technician’s original device configuration remains intact and state required calibrations happen in seconds.
The cornerstone of a complete Ignition Interlock program
Over 1 million clients have trusted Smart Start for more than just an Ignition Interlock Device. It’s the lowest-priced program from beginning to end, complete with knowledgeable, compassionate Program Advisors who are with you every step of the way.
Fast, professional installation on any model or age of vehicle.
24/7/365 multilingual Customer Care whenever you need it.
Transparent pricing, with no hidden fees or last-minute charges.
Thousands of locations nationwide; more than any other provider.
Our Client Portal app provides valuable flexibility
Download and enroll in our free Client Portal app to manage your Ignition Interlock account from anywhere. Our Client Portal makes it easy to: