When checking IDs to identify minors, how can laser engraving used on the new British Columbia Drivers Licenses and Identification Cards help?

Question: When checking IDs to identify minors, how can laser engraving used on the new British Columbia Drivers Licenses and Identification Cards help?
What feature of the British Columbia Driver’s Licence should be inspected to determine its authenticity?
  the engraving can only be seen under black light for security reasons
  the engraving is tactile and can be felt by touch to identify authenticity
  the engraving includes holographic imprints that are visible using a magnifying lens for additional security
  the engraving includes elaborate graphic designs that can be observed by the naked eye to prevent fraudulent IDs

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the engraving is tactile and can be felt by touch to identify authenticity