A footprint generator capable of applying a constant force includes: a base plate in which a target surface may be on an upper surface of the base plate; a shoe mounting member that is apart from the upper surface of the base plate and capable of mounting a shoe; a driving unit that is apart from the upper surface of the base plate and capable of moving the shoe mounting member up and down; and a force measuring unit configured to measure an impact force when the shoe mounting member descends and contacts the shoe with the target surface to generate a footprint on the target surface.

A footprint generator capable of applying a constant force includes: a base plate in which a target surface may be on an upper surface of the base plate; a shoe mounting member that is apart from the upper surface of the base plate and capable of mounting a shoe; a driving unit that is apart from the upper surface of the base plate and capable of moving the shoe mounting member up and down; and a force measuring unit configured to measure an impact force when the shoe mounting member descends and contacts the shoe with the target surface to generate a footprint on the target surface.

A sheet-shaped sensor is laid on the ground on which a person can walk in a barefoot state or a barefoot-equivalent state so as to allow it to come in contact with the soles of the right foot and left foot. A feature value acquisition unit derives a feature value based on a first point positioned in an inner side of a landing portion below a metatarsal bone of the right foot or left foot, a second point positioned in an outer side thereof, and a third point positioned at a landing portion below a calcaneus bone, based on an output of the sheet-shaped sensor generated when the person stands still on the sheet-shaped sensor or when the person is walking. An authentication unit authenticates the person based on the feature value.

Disclosed are devices and methods for collection, labeling and matching biological samples containing nucleic acid in conjunction with collecting at least one ridge and valley signature such as a fingerprint or footprint of an individual. Such devices and methods are used in forensic, human identification, paternity, tissue typing, and screening technologies to rapidly process an individual's identity, determine the identity of an individual along with the genotype profile of the individual.

Disclosed are devices and methods for collection, labeling and matching biological samples containing nucleic acid in conjunction with collecting at least one ridge and valley signature such as a fingerprint or footprint of an individual. Such devices and methods are used in forensic, human identification, paternity, tissue typing, and screening technologies to rapidly process an individual's identity, determine the identity of an individual along with the genotype profile of the individual.

An assisted early screening system for Down syndrome, relating to assisted screening of Down syndrome skin prints based on a machine learning algorithm, wherein the system comprising: (a) a skin print feature input module; (b) a processing module for diagnosis of Down syndrome based on skin print, wherein the processing module performs a scoring processing on the inputted skin print features according to a predetermined evaluation criteria to obtain a risk score, and compares the risk score with a Down syndrome risk threshold, thereby obtaining an assisted screening result; and (c) an output module for assisted screening result, which is configured to output the assisted screening result. The assisted early screening system for Down syndrome can implement simple, accurate, and effective assisted early screening of Down syndrome, such that powerful assistance can be provided for postnatal early intervention for early Down syndrome patients.

An assisted early screening system for Down syndrome, relating to assisted screening of Down syndrome skin prints based on a machine learning algorithm, wherein the system comprising: (a) a skin print feature input module; (b) a processing module for diagnosis of Down syndrome based on skin print, wherein the processing module performs a scoring processing on the inputted skin print features according to a predetermined evaluation criteria to obtain a risk score, and compares the risk score with a Down syndrome risk threshold, thereby obtaining an assisted screening result; and (c) an output module for assisted screening result, which is configured to output the assisted screening result. The assisted early screening system for Down syndrome can implement simple, accurate, and effective assisted early screening of Down syndrome, such that powerful assistance can be provided for postnatal early intervention for early Down syndrome patients.

A method of determining footprint identity using a dimension reduction algorithm according to an embodiment includes: pre-processing to process three-dimensional (3D) image data about footprints of a first person and a second person and convert the 3D image data into one-dimensional (1D) data about the footprints of the first person and the second person; calculating a distribution of cross-correlation coefficients between two pieces of 1D data about footprints of the first person (SC: same footwear correlation) and a distribution of cross-correlation coefficients between the 1D data about the footprints of the first person and the second person (DC: difference footwear correlation); and calculating a likelihood ratio based on the SC and the DC to determine the degree of correspondence between the footprints of the first person and the second person.

A foot imprinting device includes a plurality of foot imprinting units each of which includes a base seat, a colored pad disposed on the base seat, and a light transmitting sheet flippably disposed on and covering the colored pad. The light transmitting sheet is movable between a first state, in which the light transmitting sheet is configured to be stepped on by a person, and a second state, in which the light transmitting sheet is configured to show a footprint of a foot of the person.

Disclosed are devices and methods for collection, labeling and matching biological samples containing nucleic acid in conjunction with collecting at least one ridge and valley signature such as a fingerprint or footprint of an individual. Such devices and methods are used in forensic, human identification, paternity, tissue typing, and screening technologies to rapidly process an individual's identity, determine the identity of an individual along with the genotype profile of the individual.