All fingerprint systems depend on a significant overlap between the prints enrolled versus the prints presented during everyday usage. The following elements must be respected when planning a fingerprint product solution:
Ergonomic - Guiding Frame
A guiding frame, enabling the user to place the correct part of the correct finger on the sensor surface in a consistent and uniform fashion, is key to achieving an appropriate level of security. In real life mass-market applications, users “on the go” or in-the-dark depend on feeling where to place their biometric keys (selected fingers). Without a physical frame, a skewed finger placement typically results in the false rejection of the rightful device owner.
Most civilian fingerprint applications are “unmanned,” meaning an experienced officer supervising the scanning process is not available. Guiding the user with animations, pictograms and instructions is an important step not to be neglected, particularly during automated enrollment.
All of the above measures presume that a high-quality large area sensor is available. NEXT-certified partner algorithms allow 360° rotation and are fault tolerant for displacement when used with NEXT sensors.
Paying close attention to the dimensions above during the system design phase ensures daily reliable operation even under difficult circumstances.