Glossary term
OBD-II device
OBD-II device: A small unit plugged into a vehicle's on-board diagnostics port that records mileage and, in some programmes, driving behaviour.
Where this term matters
Guides and entries on this site that use the term.
Guide
How Pay-As-You-Go Car Insurance Works
The two models behind pay-as-you-go car insurance—pay-per-mile and behaviour-based telematics—how premiums are calculated, and how the devices and apps collect data.
Guide
Privacy and Data in Pay-As-You-Go Insurance
What telematics devices and apps actually collect, how insurers use and share it, how long it is kept, and how to limit what you give up.
Entry
What Driving Data Do Usage-Based and Telematics Car Insurers Track?
Understand exactly what driving data telematics and pay-as-you-go car insurers record, how devices gather it, and state rules governing driver privacy.
Entry
Is Pay-Per-Mile Car Insurance Worth It for Seniors and Retirees?
Learn how pay-per-mile car insurance works for retirees and senior drivers. See how reduced annual miles, base rates, and state rules affect your savings.