Secrid is safe to use

Blocks unwanted reading of RFID

[RFID = Radio Frequency IDentification]
If your RFID cards, such as the Oyster card, ID cards or the latest generation of credit cards, are not adequately protected, they can be detected and copied from a distance, without you noticing.
This can happen anytime, anywhere and by anyone who has a wireless cardreader, because the radio waves will easily cross any fabric or leather. The Secrid Cardprotector will protect your cards by effectively blocking these radio waves.

Prevents Cards From Becoming Brittle

Leather absorbs chemicals from plastic cards, which makes the cards brittle and increases the risk of them breaking and cracking. This problem is avoided because the Secrid Cardprotector is made of aluminum.

Protects Against Bending And Breaking

When using standard-sized wallets in your backpocket, cards are often forced into a curved shape. This, together with the chemical interaction with leather, can cause your cards to be completely damaged within a year. Because of the Secrids aluminum casing, this problem is solved forever.