change
Set new PIN code for wristband.
PIN code is string with numbers and length of 6.
If there is no default wristband then GoBeNotSetException will be emitted.
If wristband state isn't connected then ConnectionNotStarted will be emitted.
If PIN code is wrong then WrongPINCodeException will be emitted.
NOTE: User must be valid.
Return
Completable that completes when pin has been updated
See also
Parameters
pin
new PIN code