1*4a64e381SAndroid Build Coastguard Worker# Border Router Tools 2*4a64e381SAndroid Build Coastguard Worker 3*4a64e381SAndroid Build Coastguard Worker## PSKc Computer 4*4a64e381SAndroid Build Coastguard Worker 5*4a64e381SAndroid Build Coastguard Worker`pskc` computes a Pre-Shared Key for the Commissioner (PSKc). The PSKc is used to authenticate an external Thread Commissioner to a Thread network. Build and install OpenThread Border Router to use this tool. 6*4a64e381SAndroid Build Coastguard Worker 7*4a64e381SAndroid Build Coastguard Worker## Steering Data Computer 8*4a64e381SAndroid Build Coastguard Worker 9*4a64e381SAndroid Build Coastguard Worker`steering-data` computes steering data, which is used to filter new devices joining Thread network. 10*4a64e381SAndroid Build Coastguard Worker 11*4a64e381SAndroid Build Coastguard WorkerSee [Tools and Scripts](https://openthread.io/guides/border_router/tools) for more info. 12