Secrid FAQ


Are your Secrid products authentic?
Yes, all products sold on are guaranteed authentic.

To check on the authenticity of products, each Secrid wallet is given a unique serial number, engraved on the inside of the Cardprotector. This code represents the personal history of each wallet; when and where it was made, who assembled and tested it and where in the world it was sold. Rest assured, all of the Secrid wallets sold at Plus Minus do come with a unique serial number.

We are also listed on the store locator of Secrid's website under Singapore.

If still in doubt, you may contact Secrid via email at or via call at +31 070 390 2180 from 08:00 - 18:00 CET to double confirm if we're an authorised seller.


To save paper, please kindly refer to this manual online. 

How many cards can fit into the Secrid wallet?
The aluminium cardprotector can hold 4 to 6 cards, depending on their thickness. The higher the number of cards with embossed details, the fewer cards the Cardprotector can hold in total. Its mechanism also works with just one card, so it isn't necessary to fill the Cardprotector completely.

The Cardprotector is the most minimalist wallet in Secrid's collection. An additional Moneyband or Slide can be added to the Cardprotector to extend your everyday set up - Ideal for a few extra cards or business cards. The Cardprotector is integrated into all Secrid leather wallets. These wallets provide enough space for 4 to 6 cards in the Cardprotector and room for cash, receipts, business cards and less frequently used cards in their leather exterior. The leather part of Secrid's Miniwallet and Twinwallet provides space for at least 4 extra cards. The Slimwallet has a wider cut, providing space for at least 6 extra cards. From the Cardprotector to the Twinwallet, there is a wide range of compact solutions to suit almost everyone.

Are Secrid wallets suitable for paper cards?
The Cardprotector is made for standard credit card size plastic cards. The Cardprotector is not suitable for paper cards such as business cards, because they can jam the mechanism. However, the Moneyband, Cardslide, Miniwallet, Slimwallet and Twinwallet do provide space for paper cards, cash and receipts.

Are there guidelines for the best way to carry bank notes?
In spite of their compact size, our wallets can hold a surprisingly large number of notes. We're often asked how banknotes should be placed in the moneyflap of our leather wallets. There is no single answer to this. Every wallet becomes personal once it's being used, and that also applies to putting away banknotes.

There are two methods we recommend. The first is to slide notes down horizontally, so there is no need to fold the money. Anothe way is to open out the moneyflap and place the notes vertically. By folding back the moneyflap, the cash is held securely int he wallet and takes up very little space.



How do I clean my Cardprotector?
The Cardprotector is made of anodised aluminium, plastic and stainless steel and is impervious to water. You can clean the Cardprotector with a soft cloth and soap, and rinse it with warm water. However the salt in seawater can affect the metals, so we recommend rinsing the Cardprotector with fresh water after contact with salt water. Make sure the mechanism is dry before using your wallet again.

How do I take care of the leather on my Secrid wallet?
In general, Secrid wallets need very little maintenance, and this also depends on the leather type. Please kindly visit each product page to learn more about the leathers used.


What does the Cardprotector protect against?
The aluminium Cardprotector protects cards against bending, breaking and unwanted RFID and NFC communication.

What is digital skimming?
This is a practice, also known as digital pickpocketing, where your cards are read, activated or copied from a distance. Criminals can commit this identity theft with the use of RFID readers, without ever touching your wallet. The frequencies of the RFID / NFC tag can't penetrate aluminium, making the Cardprotector like a firewall against this unauthorised reading and copying of data.

What is RFID / NFC?
Radio Frequency IDentification (RFID) and Near Field Communication (NFC) are wireless communication methods. A chip and an antenna provide the ability to be activated and read remotely. It's convenient - There is no need to take your card out of your wallet to pay or check in. It makes payment easier and faster, but does involve a risk, because criminals could activate unprotected cards remotely and steal your money or personal data unnoticed. The Cardprotector is the heart of Secrid wallets and protects against these risks because the radio waves cannot penetrate the aluminium case. This has been tested by TNO / TUV, an independent European organisation that validates the safety of products.

RFID has been in use for decades and is a forerunner of NFC. Unlike an NFC card, an RFID card does not usually have a memory, so it functions as a wireless barcode that only transmits its own serial number. NFC is a smarter technology and can store small amounts of data. One example is a public transport card, which stores when and where it has been used so that the conductor can access this data without any internet connection.

Both RFID and NFC have two types: active and passive. The major difference between these two is the energy supply. Active types of RFID and NFC are supplide with power and can communicate wirelessly on their own. The passive type does not have a power supply and communicates only when activated by an external reader. This is why modern cards are not equipped with a battery. From the outside, it's often not possible to recognise which type of communication is in use. The distinction can be made however, by looking at the application. Some examples can be found below:

Passive ( No Power Supply ) Active ( Own Power Supply ) 
RFID ( Serial Number ) Access Cards Tracking Chips
NFC ( Data ) Bank Cards / Travel Cards Smartphones


How do I recognise a RFID / NFC card?
Many travel cards, business access cards and the latest credit and debit cards have an RFID and NFC tag. These cards can be recognised by one of the following logos:

Does the Cardprotector also protect against magnets?
Secrid wallets provide the same amount of protection as traditional wallets. Currently there are no standards for measurement of magnetic field protector, so the degree of protection cannot be expressed as a number of percentage. The best protection from magnets remains distance.

Magnets can damage magnetic stripe cards. The magnet's strength and time of exposure influence how much damage can be caused. Long exposure to the weak magnetic closure on a bag is more likely to damage the card than brief exposure to a strong magnet. The type of magnetic strip card also influences the amount of damage a magnet can do. There are HiCO (High Coercivity) and LoCo (Low Coercivity) cards that are characterised by the properties of the magnetic stripe. LoCo cards can be written with a lower magnetic field, and as a result, strong magnetic fields can change and / or erase its data. It's a similar process to overwriting cassette tapes back in the day. Examples of modern applications of LoCo cards are parking, hotel or gift cards. HiCo cards, for instance older payment cards, are more resistant to external forces but remain sensitive to magnets.

In practice, the magnetic stripe on cards is hardly being used anymore. We've gone from swiping to inserting the card and contactless payment. Over the years, cards have been improved by the addition of a chip and an antenna, making their usage smarter and more effortless. As new global standards aren't made in a day, most modern payment cards contain both a magnetic stripe and chip. As regular magnets only affect the magnetic stripe, modern cards can't be damaged significantly by the proximity of a magnetic field.


Can Be Damaged By Magnets

Can Be Activated By Hackers

Secrid Wallets Provide Extra Protection

Magnetic Stripe








RFID / NFC Antenna






Although our products are carefully checked before being packed and shipped from Secrid's warehouse in The Hague, small product flaws may still occur. Fortunately, you can fix most of them yourself. If that's not the case, we're always delighted to find a suitable solution together.

The level does not spring back - What do I do?
If the lever gets stuck when you pull it to eject your cards, try changing the order of your cards and straightening bent cards. Alternatively, you can remove any dirt by shaking, blowing or rinsing the Cardprotector with warm water. 

When the level feel unusually loose, you may have triggered the salamander mechanism. In this case, gently push the lever back to its neutral position until you hear a click.

How do I recognise the salamander?
The Salamander lever is named for its ability to split the arm that pushes the cards out. Just like a real salamander, the arm 'grows back’ once it has been pushed back into place. You can recognise the Salamander lever on the base of the Cardprotector – it has two small plastic arms to the right of the lever. You can also recognise it by the seam in the middle of it. If the lever you're holding doesn’t have a seam, your wallet isn’t equipped with the new mechanism and we advise you not to use extra force.





How do I register my Secrid wallet for warranty?
Every Secrid product has been given a unique serial number since 2015, engraved on the inside of the Cardprotector.

Visit Secrid's product registration page and enter this unique code to register your product for an additional year of warranty and a certificate of authenticity.

We are aware that there are replicas of Secrid products in circulation. By registering your unique product code online, you can confirm the authenticity of your Secrid product. Immediately after your product registration, you will receive a certificate of authenticity.