Abstract: An automatic alarm system is described that is triggered by the lack of event at one or more portable remote unit(s). The system includes an electromagnetic interface from a plurality of portable units to a central command and monitoring element. This automatic triggering of an alarm condition adds security to the users of the system since it is not always feasible to explicitly trigger an alarm when in danger.

Abstract: A monitoring service is described that allows flexible response through operators taken from a group of chosen individuals. When an alarm state is triggered the chosen individuals may act collaboratively as operators to manage alarm conditions for a particular user.

Abstract: A monitoring service is described that allows flexible response through operators taken from a group of chosen individuals. When an alarm state is triggered the chosen individuals may act collaboratively as operators to manage alarm conditions for a particular user.

Abstract: An automatic alarm system is described that is triggered by the lack of event at one or more portable remote unit(s). The system includes an electromagnetic interface from a plurality of portable units to a central command and monitoring element. This automatic triggering of an alarm condition adds security to the users of the system since it is not always feasible to explicitly trigger an alarm when in danger.

Abstract: A method for permitting the secure transmission of electronic messages by using biometric certification is provided. Enrolled fingerprint feature sets, which have been uniquely modified for a particular person with whom messages will be exchanged, are cross-enrolled between the sender and receiver such that the biometric identity of both the sender and receiver can be checked during message sending and receiving. In one embodiment, the sender provides a live-scan fingerprint feature set which is subtracted from the enrolled fingerprint feature set of the sender to create a “difference key” or “difference key” that is used to encrypt the message and other fingerprint data. The receiver decrypts the sender's live-scan fingerprint feature set that is then used to reconstruct the difference key, which is then used to decrypt the message.

Abstract: A fingerprint optical input apparatus comprises a contact image sensor for viewing a moving finger and providing a high contrast image. A narrow strip of the fingerprint touching a transparent platen is illuminated by sheet of collimated light normal to or at an oblique angle to the surface. The fingerprint image is viewed at an oblique angle by partially scattered light or by frustrated total internal reflection by a GRIN rod lens array and projected onto a linear array sensor. Various embodiments of the platen provide a compact design by using TIR or mirror reflections of the fingerprint image.

Abstract: A fingerprint optical input apparatus comprises a contact image sensor for viewing a moving finger and providing a high contrast image. A narrow strip of the fingerprint touching a transparent platen is illuminated by sheet of collimated light normal to or at an oblique angle to the surface. The fingerprint image is viewed at an oblique angle by partially scattered light or by frustrated total internal reflection by a GRIN rod lens array and projected onto a linear array sensor. Various embodiments of the platen provide a compact design by using TIR or mirror reflections of the fingerprint image.

Abstract: A fingerprint optical input apparatus comprises a contact image sensor for viewing a moving finger and providing a high contrast image. A narrow strip of the fingerprint touching a transparent platen is illuminated by sheet of collimated light at an oblique angle to the surface. The fingerprint image is viewed by frustrated total internal reflection by a GRIN rod lens array and projected onto a linear array sensor. Various embodiments of the platen provide a compact design by using TIR or mirror reflections of the fingerprint image.