Your Ticker device collects data on how the car is being driven, not the individual person behind the wheel. This means that if someone else drives your car and speeds, that event is still linked to the vehicle and the policy, so it can affect your policy.
This means that someone else driving your car would factor into your driving trends, so it’s important for any named drivers to drive carefully.
Your good driving discount at renewal is worked out from how you've driven over the whole policy year.
Remember: only named drivers are insured to drive your car. Even if someone has their own insurance, they're not covered to drive your car unless they're named on your Certificate of Motor Insurance.
Your car must not be covered by any other insurance policies.