We are building core infrastructure connecting blockchain with physical devices.
OSKey ELF is an open hardware wallet, free from vendor lock-in, supporting hundreds of chips from multiple manufacturers. The minimum supported chip costs only $0.3.
We created our own board for demos - similar to others but more refined and production-ready.
| Software | Hardware |
|---|---|
| butterfly-oskey-elf | butterfly-oskey-elf-board |
An intriguing concept: A hardware wallet built on smartcard technology - similar to transit cards, bank cards, and SIM cards. Runs a complete wallet directly on the card, achieving high security at low cost. Easily interacts via phone's built-in NFC.
| Software |
|---|
| butterfly-oskey-elf-card |
Some small works combining software and hardware.
| Repo | Info |
|---|---|
| water-heater | This open-source solution for a water heater replaces the original controller to enable remote smart control. |
