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IDGem tablet family

SigID biometric verification software

electronic fingerprint technology

Electronic Fingerprint Technology

Topaz IDGem biometric input terminals feature state-of-the-art RF or Optical imaging electronic fingerprint sensors for accurate high-resolution fingerprint capture. This technology captures an image of the living subcutaneous skin tissue, which unlike the fingertip’s surface is free from the damages and defects caused by the environment. The result is a fingerprint capture technique that will work with any user’s print, even through substances such as lotion, sweat, oil, and dirt that often confuse other capture systems and prevent the fingerprint image from being accurately recorded.

IDGem tablets are bundled with Topaz SigID software for the capture, storage, and scoring of electronic fingerprints against a user’s template for validation. SigID allows fingerprints to be saved as BMP, TIF, and JPG images at a variety of sizes and resolutions or as an ASCII-hex string for storage in a database. It is the accuracy of this RF-inductive capture system and its ability to function despite intermediary substances that result in low False Acceptance and False Rejection Rates (FAR and FRR). In a system where the technology must make a speedy, automated determination of the authenticity of a fingerprint, FAR and FRR must be at or near zero. This way, authentic fingerprints are not rejected and false prints are not accepted, saving the user time and money. Other systems that detect a fingerprint using the actual skin surface are subject to high FAR and FRR, which is why Topaz signature capture and RF-Imaging fingerprint technology result in the lowest false rates in the industry.

Matching or imaging?

Topaz IDGem products create detailed high-contrast images of a fingertip's detailed skin characteristics.  SigID software captures and stores this image information to create unique user templates.  Using pattern-matching algorithms, fingerprint inputs are compared to existing templates and verified for rejected. This method makes cumbersome high-resolution fingerprint graphics unnecessary for recognition and matching, allowing greate freedom and ease of operation.

Governmental or Commercial Use?

It is important to understand this distinction.  If you are required to provide signatures by law to a law-enforcement database such as the FBI’s advanced Automatic Fingerprint Identification Systems (AFIS), you should be already submitting these on paper as required by a law.  Providing electronic fingerprints to these databases requires AFIS-compatible hardware that is available for prices in the range of $5,000 to $25,000.  If you need to report to these agencies, Topaz suggests that you look at www.identix.com or www.crossmatch.com for these high-quality “roll and slap” professional law-enforcement fingerprint imaging systems. 

For commercial applications not involving government interaction, the most important factor to consider is the quality of capture technology, reliability, and data storage options. In these environments, capturing a fingerprint as accurately and reliably as possible is more important than generating the highest-quality and resolution image. Topaz IDGem is an excellent choice in these environments because of its accurate and reliable RF-Imaging technology and powerful bundled SigID software.

For example, an employer may wish to automate timecard clock-ins and clock-outs for employees to ensure that they are working the requisite number of hours and not billing the company for hours they have not spent at work. At the beginning of a shift, an employee registers their presence at the fingerprint terminal. This input is time-stamped and placed into a database. The same process is repeated when the employee finishes their shift. In this application, having an accurate capture technology that is able to clearly register any print is a necessity; having a super-high quality bitmap is not. In fact, having a high-quality bitmap capture in this environment may be a liability to the employer due to both the large size of the image file and potential liability for identity theft should the database security be compromised. This is why Topaz SigID software enables users to save fingerprints as small ASCII strings that contain the relevant signature identification information without requiring a large image file to be generated. Should unauthorized persons gain access to the database, the fingerprints of employees are not revealed, but only enough unique summary data as is necessary to make comparisons to their existing fingerprint template. Since the state-of-the-art IDGem sensor records the subcutaneous print data, the record is highly accurate and measured using special sophisticated pattern-matching algorithms for precise recognition.


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