Browse Prior Art Database

Badge I - Switch off Badge-Antenna when in public area. Disclosure Number: IPCOM000019992D
Original Publication Date: 2003-Oct-16
Included in the Prior Art Database: 2003-Oct-16
Document File: 1 page(s) / 4K

Publishing Venue



Switch off Badge-Antenna when in public area.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Badge I - Switch off Badge-Antenna when in public area.

  Badges without contacts need only be hold onto a badge reader, to gain access to buildings, parking lots, rooms and so on. The badge reader communicates with the badge via RF signals.

    The badge gains energy from the RF signals and sends an identification code to the badge reader. The identification code is verified by the system and if valid, access is given.

    A problem could arise, when the badge receives RF signals from a portable badge reader, for instance during rush hours in the underground railway.

    Someone could use this trick and the identification code could be stolen that way. With a dummy badge and a hidden antenna, the stolen identification code could be sent to the 'real' badge reader and unauthorized access could be gained that way.

    Suggested is therefore the integration of a switch, for instance between antenna and chip.

    That switch could be a simple metal piece on the badge holder. The badge would have the appropriate electrical contacts.

    Only when the badge and holder are pressed together, the switch is closed and the badge would work.

    Otherwise the switch would be open and the badge would be without RF function.

    The new switch could also be pressure- or touch sensitive and could be built into the badge and utilize the existing chip contacts.

Disclosed by International Business Machines Corporation