Somebody installed the password lockscreen , my problem I don't know the password. How can I recover the password?

[0825926264]

somebody installed the pasword lockscreen , my problem I don't know the pasword

password for lock screen

 

[belodion]

Re: somebody installed the pasword lockscreen , my problem I don't know the pasword

Here's the solution:
https://support.google.com/nexus/answer/3388218?hl=en

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