Patent Document ID: 10086638
Application ID: 14877851

Base Claim:
1. A method to embed a security feature into an identification document for identifying a person holding the identification document, the method comprising: placing the identification document to receive laser irradiation, wherein a metalized structure is inside the identification document and is coated with metal; focusing a laser beam on a portion of the metalized structure; irradiating the portion of the metalized structure such that metal is removed from the portion of the metalized structure at the focus of the laser beam; and creating a spatial pattern in the metalized structure by refocusing the laser beam to irradiate at least one more portion of the metalized structure, the created spatial pattern including a feature to identify the holder of the identification document.

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Claim 2:
2. The method of claim 1 , wherein the metallized structure comprises one of a kinegram, a hologram, an exelgram, or a pixelgram.