**Here are some examples of using the word «activate»:**
1. I need to activate my new credit card to start using it for purchases.
2. The security system will automatically activate if it detects any unauthorized movement.
3. To access the special features of this app, you need to activate the premium subscription.
4. The teacher activated the projector to show the students a presentation.
5. The alarm on my phone will activate if I leave my house during the night.
6. She activated her emergency contact list to notify her friends and family in case of an emergency.
7. The software automatically activates when you connect the device to the internet.
8. To participate in the online contest, you need to first activate your account and then submit your entry.
9. The fire alarm activated when there was a smoke in the building.
10. The app will activate the GPS function to track your location during the ride.