Connect to wifi through scanning QR code//secure way

You can connect to wifi directly 

- 1. scanning QR code of another android phone which should be connected to wifi

-Go to setting connect to wifi and share QR code from that connected phone

-2.  Scan QR code through QR code scanner (Some phone have feature in its camera and some phone  should download UC Browser which allow to scan QR code).

3. Via UC Browser you will connect to wifi and password will be shown there..
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Note..
Every phone may not allow to share QR code ..But works most of Android device.

Hope It will help..