There are many people who carry their ID, or even money in their mobile phone case, with the risks that this entails. Keep in mind that in most cases you can see what’s in the case and be an easy target for thieves, although this is not the only danger.
We are going to give you some reasons why we do not recommend carrying your ID inside the mobile case , any other alternative being a better option, even not carrying it, having other ways of identifying yourself or carrying it in your wallet, bag, etc.
Although it seems like a comfortable option, it is not worth it due to the possible dangers to which you are exposed.

It is to blame for the failures of the NFC
One of the main problems that you may face if you have your ID in your mobile phone case is that it can cause errors when using the NFC, so you may find that you want to pay with your mobile on some occasion. and it gives you problems without you knowing what it is due to.
You will have tried many things until you find the cause, even changing the cover thinking it was this one without knowing that the real problem was something else.

If the cover can already lead to failures of this type, if you also keep the DNI in it, the chances increase considerably. This can affect you in any use of NFC technology because it can interfere with its short-range signal.
Anyone can access and use your data
It may seem silly to you, but if you have your DNI in the case of your mobile, anyone can see your data and use it in different ways, there are many more uses that they can give you than you imagine.
As long as you have it in your hand, or if you can see its back, other people will have access to private information. Also taking into account that the mobile is usually exposed, they can steal it and take your ID with them.

With your DNI, thieves can make purchases, sign contracts, request loans or commit different crimes in which they may implicate you.
Not only that, but all the procedures and complaints that you have to carry out, not to mention how complicated it is to solve it in some cases and the headaches it leads to.
Deforms the cover and protects less
If you carry your ID, any other card or money in your mobile, the cover ends up deforming by “adapting” to what is inside. This can lead to it lasting much less time or fitting less to your mobile in certain areas, such as the camera that may not be as protected or the corners.
In addition, in some cases, this results in your mobile being less protected against falls or bumps.

In some cases it is not very significant, but if the case does not fit perfectly or is not fully compatible, you will notice it much more. What is clear is that the useful life of this accessory will be shorter.