Translucent J3R180 Smartcard

User-programmable smartcard designed to add low-cost, secure-element–backed storage to your DIY self-custody projects.

Comes in a translucent finish instead of the standard black or white smartcards, giving it a cleaner, more refined look.

Features an NXP J3R180 JavaCard with dual-interface support (contact and NFC), or an NFC-only option. Compatible with JavaCardOS 3.0.4. Delivered unlocked and ready for use.

To use the card with a PC, a smartcard reader (USB contact or NFC contactless) is required.

Supports applets such as:

• Satochip – Bitcoin, Ethereum, Litecoin hardware wallet

• Seedkeeper – Password manager

• Satodime – Cryptocurrency bearer card

• Specter DIY – Bitcoin DIY hardware wallet