Device security system

• US 5,748,084 A
• Filed: 11/18/1996
• Issued: 05/05/1998
• Est. Priority Date: 11/18/1996
• Status: Expired due to Fees

• Current Assignee: Jeremy M. Isikoff
• Original Assignee: Jeremy M. Isikoff
• Inventors: Isikoff, Jeremy M.
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): Lee, Benjamin C.
• Application Number:
  US08/751,842
• Time in Patent Office: 533 Days
• Field of Search: 340/571, 340/568, 340/825.31, 340/691, 340/539, 395/182.04, 395/182.13, 395/489, 395/186, 395/187.01
• US Class Current: 340/568.1
• CPC Class Codes: G01S 13/878 Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector G01S13/874 takes precedence
• CPC Class Codes: G01S 5/04 Position of source determined by a plurality of spaced direction-finders
• CPC Class Codes: G06F 21/88 Detecting or preventing theft or loss
• CPC Class Codes: G06F 2207/7219 Countermeasures against side channel or fault attacks
• CPC Class Codes: G08B 13/1418 Removal detected by failure in electrical connection between the appliance and a control centre, home control panel or a power supply

Abstract

An object tracking, communication, and management system for a laptop computer or similar device, wherein a beacon or transceiver in the computer implements file integrity or device recovery steps. The beacon protects data, or transmits files or data from computer storage back to the owner or authorized party, either automatically or in response to a request for data recovery, and may broadcast a signal for tracking and recovery of the computer after a theft. Preferably the system also operates in a normal mode to provide or acquire files or data, to or from a remote location, as either requested by the operator or by a third, calling or transmitting party, or automatically, for normal communications or data upkeep. When activated as a security device it implements strategic machine control including enabling, disabling, or modifying functions of the computer and communication of data. The system includes a beacon with preferably both a transmitter and a receiver, internal security logic, and external system elements for locating the beacon via either RF tracking or the communication of its position coordinates back to the owner via the transmitter. A combination of hardware and/or software within the beacon and the host system initiates and coordinates operation of the aforementioned communications or security features. Tamper detection logic implemented in software or hardware responds to tampering or removal of the beacon or other components by alerting via the transmitter and/or disabling functionality of the host. Preferably low level codes operate at the bios level to assure effective operation even when higher level software or plug-in components have been overridden or removed.

Claims

1. A security system for a laptop computer of the type having a processor and a power supply with a memory and applications programs for data handling, such system including a beacon containing at least one of a receiver and a transmitter, security logic for determining when the laptop has been stolen or tampered with, and security means in said beacon responsive to a determination by the security logic for selectively controlling elements of said laptop computer to secure data stored therein, wherein said security means includes means for removing said data from memory and transmitting said data.

2. A system according to claim 1, wherein said security means includes means for selectively disabling access to or operation of said memory.

3. A system according to claim 1, wherein said memory stores data files and said security means disables computer access to at least a portion of said data files.

4. A system according to claim 1, wherein said security means is operative to initiate a trackable RF transmission by said beacon and also to selectively disable higher functionality of the laptop computer thereby assuring that battery power is applied first to a security transmission.

5. A system according to claim 1, wherein said security logic forms said determination by processing an authorization code entered by a user to thereby initiate selective control of said elements in response to unauthorized use of said computer.

6. A system according to claim 1, wherein said beacon operates in conjunction with applications software to normally back up files via automatic transmission to a host.

7. A system according to claim 1, wherein said beacon includes a receiver and a transmitter, and said system further comprises a data modem, wherein said security logic receives information in a transmission to determine that the laptop has been stolen, and thereafter controls said elements to effect recovery of at least one of said data and said laptop while conserving power in said laptop.

8. A system according to claim 1, wherein said beacon includes a receiver and a transmitter, and said system further comprises a data modem, wherein said security means receives information in a transmission to identify data files in memory, and thereafter controls said elements to secure said data files.

9. A system according to claim 8, wherein said security means secures said data by performing at least one of encoding, erasing, overwriting, hiding and transmitting out said data.

10. A system according to claim 8, wherein the security logic communicates with the processor and calls bios to execute a security function so as to implement said function despite tampering with higher level features of the system.

11. A system according to claim 8, wherein said beacon transmits the identified files to a host.

12. A system according to claim 11, wherein the beacon further coordinates a transmission time with a tracking receiver to thereby conserve battery power as it effects security tasks.

14. A system according to claim 1, further comprising a physical sensor for detecting physical tampering, and wherein said security logic responds to the physical sensor to form said determination of tampering.

13. A security system for a laptop computer of the type having a processor and a power supply with a memory and applications programs for data handling, such system including a beacon, security logic for determining when the laptop has been stolen or tampered with, and security means in said beacon responsive to a determination by the security logic for selectively controlling elements of said laptop computer to secure data stored therein, wherein said beacon includes a receiver and a transmitter, said system further comprises a data modem, and wherein said security means collects files for recovery, and thereafter controls said elements to compress said files and transmit them to a host.

15. A security system for a laptop computer of the type having a processor and a power supply with a memory and applications programs for data handling, such system including a transceiver and data modem, security logic for determining when the laptop has been stolen or tampered with, and security means in said transceiver responsive to a determination by the security logic for selectively controlling elements of said laptop computer to collect data files for recovery and transmit them to a host.

16. A system according to claim 15, wherein said security logic responds to at least one of a physical sensor, a message received by the transceiver, and an applications program to determine that the laptop has been stolen or tampered with.

17. A system according to claim 15, wherein said security means calls bios to disable operation of the laptop at a level that prevents access to data therein.

18. A system according to claim 15, wherein said security means resides in a tamper-proof package coupled to said processor such that removal of said package disables operation of the laptop.