🔑 iButton Keys
iButton keys allow driver identification through a unique chip.
📦 Specifications
| Parameter | Value |
|---|---|
| Protocol | 1-Wire |
| Unique ID | 64 bits |
| Contact | Stainless steel |
| Durability | 10+ years |
🔌 Connection
| iButton Reader | Spider IoT | Pin | Color |
|---|---|---|---|
| DATA | OW | 4 | Purple |
| GND | GND | 7 | Black |
💡
The iButton reader connects to the same 1-Wire bus as the temperature sensor.
🚗 Applications
- Access control: Only authorized drivers can operate the vehicle
- Trip logging: Identify who drove on each journey
- Security: Engine lockout if valid key is not presented
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