Want to let a friend or relative know that your journey is going smoothly or confirm you’ve reached your destination safely? Use GPS tracking to share your real-time location with chosen contacts. Android phones let you share your location so contacts can see where you are on Google Maps (some Android tablets and smartwatches can do this too). Apple devices, including iPhones and iPads, also have Share My Location tools, while the Find People app is the equivalent function on certain Apple Watch models. Of course, it works the other way, too: if there’s someone whose location you need to keep an eye on – whether that’s a teenager or an older or vulnerable relative – get them to set up their phone so you can find them easily.

When you get a new smartphone or smartwatch, fill in your emergency contacts and medical information such as allergies, blood type and medications. Keep this information current because first responders can access it in an emergency through your device’s lock screen. This information is called Medical ID on iPhones and Apple Watches. View it by tapping "Emergency" on the passcode screen. On Android phones, emergency info can be seen by tapping "Show" on the lock screen. Some smartphones and tablets also let you add text to your lock screen, which can help keep the device itself safe. Add a message with key information, such as an alternative phone number, that could help someone return the device if you lose it.