Future advances in molecular spin-lithographic techniques, which use a combination of lithography and magnetic fields to create nanoscale patterns on materials, could enable undetectable card marking by:
1. Nanoscale precision: By using molecular spin-lithography, it may be possible to create markings on cards that are too small to be detected by the naked eye or conventional detection methods.
2. Material compatibility: By tailoring the lithography process to the specific properties of the card materials, it may be possible to create markings that are indistinguishable from the background material, making them virtually undetectable.
1. Nanoscale precision: By using molecular spin-lithography, it may be possible to create markings on cards that are too small to be detected by the naked eye or conventional detection methods.
2. Material compatibility: By tailoring the lithography process to the specific properties of the card materials, it may be possible to create markings that are indistinguishable from the background material, making them virtually undetectable.