If you’re like most people, you probably have an Android phone that can be connected to a Wi-Fi network. But what if you want to use your phone on a public network, like a library or airport? Then you need to use NFC. NFC is a technology that uses radio waves to communicate with devices over the internet. When two NFC-enabled devices are close together, they can communicate by reading and writing data using the NFC tags on their phones. This way, you don’t have to worry about connecting your phone to a Wi-Fi network or using Bluetooth. You can even use NFC in places where Wi-Fi is not available, like at an airport or library. To use NFC, you first need to install the NFC app on your phone. Once it’s installed, open it and click on the three lines in the top left corner of the screen. This will show all of your devices that are NFC enabled. Next, click on the device that you want to connect to your Wi-Fi network. The app will show a list of networks that it can connect to. If there are any problems connecting to any of these networks, try again later when you have more time or if there are better options available online. Once you’ve connected your device to your Wi-Fi network and found some good networks for it, it’s time for some fun! To write data into one of your devices’ tags, just hold it up against another device and touch them both together (or use one hand). If everything goes well, the app will automatically write data into both tags and send an email notification when it’s done! If something goes wrong (like if one of the tags doesn’t work), then just touch both tags again and try again later when things are working better.
Near-Field Communication, or NFC, is an incredibly useful technology that gets ignored far too often. While it can be used for advanced automation of things on your Android phone, it can also be used for equally simplistic stuff, like easily sharing your home Wi-Fi data with friends.
RELATED: What is NFC (Near Field Communication), and What Can I Use It For?
What You’ll Need
NFC, as we’ve discussed before, allows you to tap your phone to an NFC-enabled object—like a pastic “tag”—and have it perform a certain action on your phone. This is what allows you to pay for your groceries with Android Pay, and perform other similar tasks. But by buying some NFC tags online, you can customize them to perform nearly any action you want.
Before we get into the specifics of this trick, let’s first talk about what you’ll need to get started. First, you’ll need a compatible phone. Basically nearly all modern Android phones should have NFC capabilities, but you can jump into Settings > More (under the “Wireless & networks” section)—if “NFC” is an option here, then your phone has it. If not, well, it doesn’t. Easy enough.
Once you have your tags in hand, you’ll need to install an app on your phone to interface with these tags—most need to be erased before they can be re-written. I generally use NFC Tools to do this, as it’s easy to use and does essentially everything you could want it to do.
Step One: Erase Your NFC Tag
Okay, now that you have everything you need, fire up NFC Tools. There will be a quick tutorial the first time you run it—read it, skip it…do whatever you want. We’re only using it for one thing: erasing your new tag. With NFC Tools open, navigate to the “Other” tab, then select the “Erase tag” option. It will tell you to “approach an NFC tag.”
This can be the tricky part: depending on your device, the NFC chip will vary in location, so you may have to move the tag around on the back of your device a little bit. It will give an audible notification once you’ve found the right spot, and it should only take a split second to erase the tag. Once it’s finished, the app will let you know.
Step Two: Write the Wi-Fi Data to Your NFC Tag
Now that you have a blank tag to work with, jump back into the Settings menu, then into Wi-Fi. A lot of NFC tricks require a separate app, but if you want to write Wi-Fi data, the functionality is built right into Android.
In this menu, long-press on the network that you want to write its data to the NFC tag. A handful of options will show up, but you want “Write to NFC tag.” Tap it.
The next menu will ask you to input the network’s password. Go ahead and enter that, then tap the “Write” option.
A screen will appear that shows the device it looking for the tag. Tap the tag on the same spot you did earlier to erase it, and within seconds the phone will let you know that writing the network was a success.
And that’s that. The next time someone comes over that needs to log in to your network, have them tap their Android phone to the tag. The phone should ask if they want to connect—all they have to do is tap “Connect.” Bam.
