Door System is an easy to use product aimed at protecting elderly
people from bogus callers. The simple interface (doorbell on
outside, one button interface with display on inside) belies
the complex technolgy inside, which automatically captures the
caller's image and fingerprint.
feature allows the user to communicate with the caller without
opening the door - thus preventing forced entry. Finally, the
system analyses the voice pattern of the caller through a lie
detector, before advising the householder on whether or not
to open the door.