When checking IDs to identify minors how can laser engraving used?

Laser engraving can be used on identification cards to create permanent, tamper-proof markings that indicate the age or status of the individual. This method allows for the incorporation of unique identifiers, such as barcodes or QR codes, which can be scanned to verify a person's age quickly. Additionally, the engraving can include secure features like holograms or patterns that are difficult to replicate, helping to prevent forgery and ensuring that IDs are authentic when checking for minors.