QR code in WhatsApp and others is a Japanese invention, short for Quick Response (smartphones can read it quickly), and QR codes can be seen in magazine advertisements, on road signs, web pages and even on clothes like shirts.
Once the code is on your cell phone, it provides you with details about the business world (allowing users to search for nearby locations), details about the person wearing the shirt, a URL that you can click to see a movie publicity bar, or even a coupon that you can use in markets. Local.
The reason that QR is more useful than normal barcodes is its ability to store (and digitally display) many data including URL links, text, and geographic coordinates. Another key feature of QR codes is the ability of any modern smartphone to scan code without requiring a scanner.
How the smartphone reads QR code
Smartphones need a QR code reader and it takes just a minute to upload and upload it to someone with an iPhone or Android phone.
How to generate QR code
You can easily generate or generate QR code using a site such as Kaywa.com, or use open source code to produce your own code if you have a smart developer, too.
What does the QR code
When you scan a QR code using your smartphone, you get direct access to its content. The QR code reader can then act as if it opens your web browser to a custom URL, storing the business card in the smartphone connection list or connecting to a wireless network.
How to scan QR code in WhatsApp WhatsApp
Here's how you can access WhatsApp or WhatsApp on your desktop via WhatsApp QR code on your phone. Remember, you can't use a dedicated QR code scanner in WhatsApp to scan QR codes outside the device you used to sign in to WhatsApp on your desktop, but in return you can always use your smartphone to scan other QR codes.
Scan QR code in WhatsApp on iPhone
Open the WhatsApp website https://web.whatsapp.com from your browser. As long as you haven't signed in to WhatsApp in advance, you'll see a QR code in black and white in the middle of the page. If you're trying to access WhatsApp from the WhatsApp desktop version, open the desktop software. The QR code will be in the center of the program window.
Open Whatsapp on your iPhone. Click on the WhatsApp icon in the form of a white handset inside a white conversation bubble on a green background. If you have not signed in to WhatsApp on this device in advance, you will need to enter and confirm the phone number when prompted before work.
Click Settings, and it's in the bottom right corner. The page settings will open. If WhatsApp chat opens, first click the Back button in the upper-right corner of the screen.
Click on the WhatsApp Web / Desktop button on the top of the screen.
Click OK, got it, then the scanner will open to scan the QR code in WhatsApp. If you access WhatsApp Web or Desktop from any other computer, you must first click Scan QR Code in the middle of the page.
Point your phone's camera to the WhatsApp QR code.When you do this, your phone should be 30 cm away from your computer screen.
Wait for the QR code to be scanned. The WhatsApp webpage will then be updated and you will see your messages and conversations.
Scan QR code in WhatsApp in Android
The process is done through the following steps: 3
Open the WhatsApp website
From your browser go to https://web.whatsapp.com/, if you are not already logged in to WhatsApp you will see a QR code in black and white box in the middle of the page.
If you try to access WhatsApp from the desktop version, open the desktop program instead, and you'll see the code in the middle of the program window.
Open WhatsApp on Android
Click on the WhatsApp icon with a white phone speaker inside a white conversation bubble on a green background.
If you haven't signed in to WhatsApp from this phone beforehand, you'll need to enter and confirm your phone number when prompted before work.
Click the three vertical dot icon (⋮)
The icon is located at the top and right of the screen, and a drop-down menu will appear.
If the WhatsApp chat opens, first click “Back” to return to the WhatsApp home page.
Click on “WhatsApp Web”
This option is in the drop-down menu, and after clicking it will open the QR Scanner page in WhatsApp.
When OK, GOT IT appears, click it
The QR scanner will open, and when you access WhatsApp Web or Desktop from any other computer, you must tap ＋ in the top right of the screen.
Point your phone's camera to a QR code in WhatsApp
When you do this, your phone should be approximately 30 cm from the computer screen.
Wait for the QR code to be scanned
After the QR is scanned, the WhatsApp webpage will refresh and you'll see your messages and conversations on the screen.