mergLA is an iOS external that adds a command to present a local authentication dialog to the user if they have setup biometric touch id authentication.


command mergLAEvaluate pReason

Authenticate the user with Touch ID. The mergLAEvaluation message is sent to the object that called mergLAEvaluate once the evaluation is complete.


  • pReason - The reason you are asking the user to authenticate

Sets the result to One of:

  • success
  • user cancelled
  • system cancelled
  • fallback
  • failed
  • can not evaluate
  • not available on this system version