It is common that, when arriving at a known place, someone needs to connect to the Internet and find a frequent obstacle: the network WIFI It is active, but nobody remembers the password. Instead of searching or restoring it, there are alternatives that allow the network to be linked without having to write any data manually.
These solutions, designed to share the connection in an agile, safe and automatic way, depend on the operating system of the device. Some rely on code reading QRothers in technologies such as nearby field communication (NFC), pairing between nearby devices or direct connection through Wi -Fi Direct.
QR codes with network credentials
One of the most widespread ways to facilitate access to a network is through a QR code which contains the connection data. In terminals Androidcan be generated from the settings of a previously saved network. The already connected device creates a scaniable code that another equipment can read to connect automatically, without the need to type the key.
In the ecosystem of Apple, iOS It also allows these codes to be scanned. If the code is well configured and valid, a notification will appear offering to join the network. It should be noted that to generate the code, it is essential that the first device is already connected. In addition, the team that scan must have a version of iOS compatible with this functionality.
Share Wi -Fi between Apple devices
Apple offers your own tool to Share access to a wireless network among its devices. If an iPhone tries to connect to a network that another close Apple team already knows, the latter can authorize access immediately.
This process requires that both devices have the Bluetooth and Wi -Fi activatedare linked by the contacts agenda and use compatible versions of the operating system. Once these conditions have been completed, the password is transmitted automatically, without the need to enter or show it on the screen, and without resorting to external applications.
Direct connection with Wifi Direct
Wi -Fi Direct It is a technology that allows you to establish links between two devices without going through an access point such as a router. Although it does not offer Internet connection directly, it does allow files to share content or connect devices such as printers.
Some manufacturers have developed variants that allow extending the connection of an active network between mobiles through this technology, although it is not a standardized or universal function in all models.
For use, it is necessary that both terminals be compatible with Wi -Fi Direct and are within the same coverage area.
Connection through NFC labels
On certain phones Androidit is possible to program tags NFC With a network data WIFI. These labels, placed in accessible places, allow compatible devices to connect automatically when approaching. For its configuration a specific application is required and the device has the NFC chip enabled.
This method is especially useful in public or shared spaces, such as offices, stores or waiting rooms, where it seeks to facilitate access without disseminating the password. However, not all mobiles or routers offer support for this functionality.
Recommended precautions
The Infrastructure and Cybersecurity Security Agency of the United States (CISA) It warns that allowing connections without introducing a password may imply certain risks if it is not controlled who accesses the network. Therefore, it is recommended to restrict these functions to reliable environments – such as home or work – frequently review connected devices and ensure that the sharing options are well configured.
Although these methods do not replace traditional authentication systems, they are useful in specific situations where immediate connection is needed and the key is not available. Choosing the most appropriate option will depend on the type of network, the environment and compatibility between devices.