10 Cool Things You Can Do with Your Smartphone That’ll Impress Your friends

Your phone can replace your car keys

You can lock and unlock your car or even dismiss an alarm without even removing your phone from your pocket. This way, your phone can be a great replacement for your car keys.

There's no need to walk up to the switch

With a few automation apps, you can turn your device into a remote that will light up your living room or dim it without you being around or walking up to the switch.

Keep a check on your heart rate

There's no necessity to invest in a fitness band to monitor your heart rate as there are heart rate monitoring apps that are available for you to download on your phone. These apps can help you monitor your heart rate using your phone's camera lens.

Use your phone as a leveling tool

There are several bubble level apps available for iOS and Android devices. These can help you hang pictures and shelves with the maximum level of accuracy.

Covert your camera lens into a scale

Tape measures might make you tired as these have been around for many years. In that case, you can try several apps that are there to use your camera lens as a tape to measure distance, width, and height.

Use the camera lens as a microscope

Use one drop of clean water on your smartphone's camera lens to convert it into a DIY microscope. The drop of water will adopt a round shape naturally and it will act as a secondary lens and let your camera focus from a distance of less than half an inch.

Accept payments done through credit or debit cards

The mobility of smartphones can be taken advantageous by letting you accept credit or debit card payments on the go. The buyer has to just sign the phone to authorize any payment and prevent fraud.

Create a sci-fi thermal camera

Thermal technology was used for military purposes, but you can use the same with your phone's camera to get a thermal image of anything that's around you. Use an app that will generate thermal images to get a temperature snapshot of your surroundings.

Get to know if batteries are empty

Your camera's camera can be used as a common IR remote control as it is sensitive to IR radiation. The infrared beam emitted when a button is pressed will show as white or purple light in the viewfinder of your camera app. You can use it to check if a remote control's batteries are dead when it stops working.

Project a cool augmented reality map on your car's windscreen

If you're driving in the rain, fog, or dark or just unfamiliar conditions, download apps that can project a cool augmented app by entering your destination. This way, your phone will project a GPS map on your windshield without any extra equipment.