Independent datetime

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I'm developing an application for password generation time on based TOTP , but I'm having difficulty when the mobile time zone is disabled or the user modifies the date / time.

I have already thought about synchronizing the date with NTP to SystemClock, but when the device is restarted the date returns to the changed time.

Is it possible to create a stand-alone clock?

    
asked by anonymous 18.11.2015 / 17:28

0 answers