The in-vehicle heart of the SOBRDRIVE platform. Sober On Start™ lets you preset a BAC limit as low as you choose — up to 0.05, below the legal limit in some states. Test with your paired Bluetooth breathalyzer before driving: if you're over your limit, Sober On Start™ helps keep the vehicle from starting, and the SOBRDRIVE app immediately offers alternatives — call a Hero, get a ride-share, and get home safe. Voluntary, private, and controlled entirely from your phone. Includes the iSober10 Bluetooth Breathalyzer. The DBS i10 Bluetooth Breathalyzer is an alcohol-specific, fuel-cell breathalyzer that connects wirelessly to Apple iOS and Android smartphones — the handheld heart of the SOBRDRIVE voluntary DUI prevention platform. Unlike cheap semiconductor breathalyzers, the i10 uses professional-grade fuel-cell sensor technology trusted by law enforcement and treatment professionals, so it responds only to alcohol and delivers an accurate BAC reading in seconds. Pair the i10 with the SOBRDRIVE app and Sober On Start™ vehicle hardware to test before you drive. If you're over the limit you set, SOBRDRIVE helps keep the vehicle from starting and offers safe alternatives — call a Hero, get a ride-share, and get home safe. No court order, no service center visits. Voluntary, private, and controlled from your phone. Compact enough for a pocket, purse, or glovebox, the i10 also serves as a personal breathalyzer to check your BAC anywhere. The app tracks your test count and alerts you when calibration is recommended (typically after 500–1,000 tests), with mail-in calibration service from Driven By Safety. Requires an active SOBRDRIVE subscription.