Iotrust previews a credit-card-sized wallet for easier offline crypto storage

South Korean cold-wallet maker Iotrust is ending an eight-year product drought. On July 14 the company opened a teaser page for the D'CENT S, a card-shaped hardware wallet set for official launch on July 21.

The wallet is literally the size of a credit card. It stores private keys for roughly 4,900 crypto assets across more than 100 blockchain networks – including Bitcoin, Ether and XRP. Iotrust designed the D'CENT S to close the gap between the security of a hardware wallet and the everyday portability of an exchange app. Most cold wallets keep funds safe but are bulky; exchange apps are convenient but users don't directly hold the assets. This device fits in a regular wallet.

The headline feature is the bundled backup card. Unlike other card-type wallets that force users to write down a 24-word mnemonic phrase, the D'CENT S ships with a dedicated "Recovery Card." If the main card is lost or damaged, users restore assets through the D'CENT app using that single backup card. Iotrust says removing the manual dictation step shortens setup and lowers the risk of the seed phrase being leaked or lost – a pain point that has kept some users away from cold storage.

Security is handled by an EAL6+ chip, the same grade used in bank cards and electronic passports. The private key never leaves the card, even if the paired smartphone is compromised. Signing a transaction takes about one second – just tap the card against the back of the phone. Because it's card-shaped, there's no cable, no battery to charge, and the unit is water- and dust-resistant. Transaction records are viewable in the D'CENT app.

CEO Baek Sang-su said the company focused on solving both convenience and the fear of losing a small device. "Including a backup card as a standard component helps users strengthen asset security while making management easier," he stated.

Iotrust also kicked off a preview event on July 14, selecting winners by lottery to receive a free D'CENT S plus recovery card. The official launch on July 21 will open general sales. For traders already juggling multiple exchange accounts, this new form factor might be the first cold wallet light enough to actually carry every day.