How to read QR codes and what they are for?

QR codes are something like square labels made up of a cloud of dots that we’ve all certainly seen already. They contain codified information of different types and that we can only read through programs or applications designed for it.

How to read QR codes and what they are for

They are known as QR because of the term “Quick Response”. They were created in Japan in 1994 and it is there where they are used massively and for the longest time. But they also appear here in many places and because they are so versatile and easy to read, they are used for very different purposes.

Where do we find them?

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75% of parents do not exercise any type of parental control of their children’s mobile

75% of parents do not have any type of parental control of their children’s cell phones, despite the fact that 31% are concerned that their child may make improper use of this device, according to a survey made to our readers in this same Blog.

El 75% de los padres no ejerce ningún tipo de control parental del móvil de sus hijos

Around 29% of parents buy their children their first ‘smartphone’ before age 12, which shows that children depend, increasingly from younger ages, on this type of device. This multiplies the importance of “accompanying” them in their use to increase their security.

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What can I do if I think they spy on my mobile phone?

There are frequent inquiries that our readers make about the possible espionage on their own mobile phones. They ask us through the comments of our blog and through the form Ask what you want and often tell us stories related to jealousy that, founded or unfounded, lead to situations of distrust and possible espionage.

¿Qué puedo hacer si creo que espían mi teléfono móvil?

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What does it mean that the security code changed in WhatsApp?

For some weeks now, we have all been getting a notification in WhatsApp chats that announces the new security measures that the service has implemented to prevent third parties from intercepting and reading our messages.

¿Qué significa que el código de seguridad cambió en Whatsapp?

Now all conversations are transmitted securely, that is, encrypted and can only be read by the sending and receiving devices. For it to work, both phones must have the application updated to the latest versions and in the case of groups, all its components must already have the latest versions installed. That is why notifications have been appearing gradually advising of “end-to-end encryption”, and it is even possible that in some chat or group it has not appeared yet.

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What happens if I leave a group of Whatsapp of which I am the administrator?

This post has its origin in the consultations made by our readers through the comments of our articles and also through our service Ask what you want…

For example…

How do I return to a group that I left but I was the administrator?

or

  If I leave a group of which I am the administrator, who will be the new administrator?

Qué ocurre si salgo de un grupo de Whatsapp del que soy administrador

When someone creates a WhatsApp group they become “the administrator” of that group and acquire certain privileges that should be known:

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Locate your friends with Facebook’s ‘Close friends’ feature

Recently a new feature has been included in the Facebook application for mobile devices. It is about the possibility of constantly sharing our location on the social network. It is called Close friends and we can configure it so that other users see our position in an approximate or precise manner.

A few months ago it appeared for users from other countries, as is the case of the USA, but it is now when it has been deployed in our country. If it does not yet appear on a phone, it may be necessary to check if we have a properly updated version.

Amigos cerca de Facebook

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Disconnect Whatsapp Web if you do not want anyone to read your conversations

The tool that allows us to use Whatsapp on a computer is great and very functional. We can perform almost any action of this application but with the convenience of a larger screen and the use of the keyboard and mouse.

Desconecta Whatsapp Web si no quieres que lean tus conversaciones

But Whatsapp Web, which is how the tool is known, can become a major problem for our privacy if we do not manage it correctly.

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Signs that tell us that an online store is reliable

Online purchasing on Internet sites continues to increase, each year being much higher than the previous in sales volume and the number of people who rely on these services is increasing.

7 signos básicos que nos permiten conocer si una tienda online es fiable

But the boom in Internet sales has also increased the number of fraudulent pages that only seek to cheat the unsuspecting buyer who lets himself be tempted by low prices without paying attention to other signals that should make him distrust.

The globalization provided by the Internet makes it possible for us to see pages with a reliable appearance and with habitual products as if they were from our country but which are actually being offered from any remote place in the world.

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When we delete a chat in whatsapp the files it contains do not disappear

(Note Sep-2017: It seems that the behavior is currently different from the one explained in this article, now the phone files do disappear when we delete the source chat)

The files that we send and receive through Whatsapp are stored in the memory of the phone even if we eliminate the conversations, something that surely not all users know.

When we delete a chat in whatsapp the files it contains do not disappear

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Duplicate and extend your PC desktop to another Windows screen

With this post we respond to our young reader Aitor who has made the following query.

I saw a computer that had two screens and could have different windows in each of them and work as if it were a double desk. How can I do that?

Duplicate and extend your PC desktop to another Windows screenIt is possible to connect more than one screen to the same computer, laptop or desktop, so that we can have different views on each one. The result will be a single computer running, but showing different applications on each screen.

Let’s see what we can do to connect an additional screen to a computer running Windows 7, although it would not be very different for any other version of Windows.

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