What is the passkey / uuid for nrf51dk , 51422 chip. For Ble pairing with my mobile app

[aman]

i am new to android programming and bluetooth low energy interface . i am using nrf51dk nrf51422 chip . My android app is currently able to detect the bluetooth module but unable to pair with it as it is asking for passkey / uuid . please help .

[Susheel Nuguru]

Did you app start encryption process? or maybe the device you are trying to connect only allows secure connection. What is your android app doing after the connection is established?