How can I prevent my daughter from being sexually active?

Hello ladies. This is my 17 year old daughter, Jamilah, and the boy she has recently started dating. My girl is a very good young woman. She makes all As and Bs, she doesn't question me when I tell her something, and she usually stays out of trouble. However with her having a job and a car I feel like that gives her easier access to do stuff with the boy. So I put life360 on her phone but what else can I do?