Systems and methods for detection of contaminants on surfaces

A system for contamination detection, the system comprising:

• an apparatus adapted with a first function and a second function, the first function corresponding to enabling operability of a mechanism requiring a hand-related motion, the second function corresponding to a computer processing step for detection of a contamination, wherein the first function is disabled upon detecting a failed state in the second function;
• a camera, an optical filter disposed in the field of view of the camera, an LED light emitter array oriented into the field of view of the camera, a sensor activation device, and a feedback device;
• and
• a processing device communicatively coupled to at least the camera, the LED light emitter array, the sensor activation device and the feedback device, the processing device configured to:
• (1) initiate the system, upon detecting a change in state in the sensor activation device, for performing a scan;
• (2) activate the LED light emitter array to generate an excitation wavelength for a known contaminant;
• (3) capture a plurality of near-simultaneous images to analyze an emission wavelength selectively passed by the optical filter to the camera for determining the presence of the known contaminant in amounts greater than a detection threshold value;
• and (4) communicate results of the analysis on the feedback device based at least in part on a comparison of a pixel intensity level in the plurality of images and the detection threshold value;
• wherein at least the processing device is housed in the apparatus.