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33 votes

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

The answer to this question is more general than the specific hardware you referenced in your question, and not Android specific in any way, but since this question seems to arise from time to time I ...
acejavelin's user avatar
  • 6,197
12 votes
Accepted

How do you pair a Device for Wireless Debugging with a QR Code?

This answer explains the background history of the built-in feature in Android Studio. For the technology used and 3rd-party software, you can read my answer here. As of 26 January 2022, the feature ...
Andrew T.'s user avatar
  • 16.2k
12 votes

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

The short answer to this question is you can not stop anybody that has the WiFi password from sharing it. Which is exactly what the phone is doing when it generates the QR code. If you want to ...
hardillb's user avatar
  • 225
8 votes

How do you pair a Device for Wireless Debugging with a QR Code?

This answer explains the technology used and 3rd-party software. For background history of the built-in feature in Android Studio, you can read my answer here. Android 11 and ADB utilize multicast ...
Andrew T.'s user avatar
  • 16.2k
8 votes

How do you pair a Device for Wireless Debugging with a QR Code?

You can pair your phone wirelessly using ADB by following these steps: Make sure your phone and laptop are on the same network. Open the following menu on your phone: Settings>Developer options>...
Yandirr's user avatar
  • 341
5 votes
Accepted

How can I use web.whatsapp.com on an Android phone with a broken screen?

Directly start WhatsApp with the correct activity intent via ADB: adb shell "su -c 'am start com.whatsapp/.qrcode.QrCodeActivity'" Then hold your camera in front of the QR Code @ http://web.whatsapp....
jubr's user avatar
  • 161
4 votes

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

You can have a dedicated guest SSID (if your router supports it). This can separate guests from you to some degree, depending on router capabilities. If you don't want give the guests permanent ...
v6ak's user avatar
  • 1,165
4 votes
Accepted

How can I import a VCARD file (contact information) via a QR code into Android contacts?

Just as a clarification for the other answers: This will depend on the app you use to scan the code - that app must support the VCARD format. On recent Android versions (since Android 8, I believe) ...
sleske's user avatar
  • 338
3 votes

How can I import a VCARD file (contact information) via a QR code into Android contacts?

On recent Android versions the camera app has a built-in QR code reader. If you point the camera on the QR code a small text containing the contact name John Doe - as shown in the screenshot (from a ...
Robert's user avatar
  • 20.5k
3 votes

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

I have a second router, just a small cheap one, connected by cable to the main router. They have different wifi networks and different passwords. I give my friends the password of the second router ...
Don King's user avatar
  • 131
2 votes

what versions of android lets you share saved wifi using qr code?

This is a feature of the upcoming Android Q version. There are device manufacturers who have already implemented this feature in their current Android 9 devices (e.g. Huawei).
Robert's user avatar
  • 20.5k
2 votes

How can I import a VCARD file (contact information) via a QR code into Android contacts?

I have by chance stumbled upon this app on F-Droid, which can import it. https://f-droid.org/en/packages/com.secuso.privacyFriendlyCodeScanner/ It appears that the Vcard and the QR code were fine but ...
VPNer's user avatar
  • 53
2 votes

Create a QR code that connects device to wifi SSID & opens a URL?

While usages of QR codes can be very versatile, there are only a few universally standard formats for a QR code, including WiFi and URL, but not as a combination. For example, the common format for ...
Andrew T.'s user avatar
  • 16.2k
1 vote

Open Wifi QR code on Android 8

For completeness sake, here's my own answer, thanks to @andrew-t. It looks as though parsing a Wifi QR code is not something provided by Android, at least not in version 8.1. The Barcode Scanner app ...
Berend's user avatar
  • 293
1 vote

WhatsApp Built in Scanner Won't Work

Found a decent workaround: I managed to scan the native app in Windows, installed from the link whatsapp.com/download. It's not a perfect solution, because I rather have it as a tab on my chrome, ...
Galia Geist's user avatar
1 vote

QR Scan in WhatsApp doesn't work (QR loads but phone scan never ends)

I found that a Chrome extension I had was causing the built in scanner to fail. DarkReader modified the background of the page to a dark colour, which apparently caused the WhatsApp QR scanner to fail....
mfurseman's user avatar
  • 111

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