Quantum dot-based identification, location and marking

A marking system, comprising:

• a reservoir including a plurality of quantum dots configured to be expelled from the reservoir;
• a means for dispersing the quantum dots from the reservoir to engage the area to be marked;
• and
• an external receiver configured to detect a predetermined emission from at least a portion of the plurality of quantum dots following dispersal and upon activation of the portion of the plurality of quantum dots by a laser.

A location system, comprising:

• a reservoir having a plurality of quantum dots disposed therein,
• the reservoir comprising a water dissolvable material that dissolves over a predetermined period while exposed to water to thereby disperse the plurality of quantum dots into the water;
• and
• an external receiver configured to detect a predetermined emission from at least a portion of the plurality of quantum dots following dispersal and upon activation of the portion of the plurality of quantum dots by a laser.

An identification system for allowing a person or thing to identify themselves by emitting a coded light frequency in response to a light wave query, the identification system comprising:

• a sensor disposed on a first portion of an article for detecting a light wave query;
• a strobe disposed on a second portion of the article for flashing in response to the detection of a light wave query;
• and
• a filter at least partially covering said strobe such that the strobe is underneath the filter relative to a predominant direction of the light wave query,
• said filter including quantum dots that the light from the strobe energizes to emit light in a direction that opposes the predominant direction of the light wave query and at a predetermined frequency which is detectable to determine the identity of the person or thing.