Security
System
Security Chip on selected models
Locking device in the IBM security slot provides physical security.
The IBM Embedded Security Subsystem (TCPA compliant) provides for authentication and encryption of data communications. The integrated 802.11b wireless lets you connect to a LAN without wires or cables. To connect to the Internet, the optional IBM High Rate Wireless Access Point 500 and an Internet phone number are required.

Password
A Power-on password (POP) protects the system from unauthorized use. If a POP is set, the password prompt appears:
Each time the system is turned on
When the system is returned to normal operation from suspend mode
A Supervisor Password provides a higher level of security than the POP. The Supervisor Password protects the system functions from being used by unauthorized users,and protects the hardware configuration from unauthorized modification. The Supervisor Password prompt appears:
When the BIOS setup screen is accessed
An HDD Password (HDP) protects HDD data from unauthorized users. Once HDP is set, data on the HDD cannot be accessed without the correct HDP. Because the HDP is stored in the HDD, the data remains protected even if the HDD is removed to another system. The HDP password prompt appears:
When the BIOS setup screen is accessed


skus si to tuna okolo tohoto linku preluskat, pripadne vyguglit viacej, ale v podstate ide o to ze je tam security chip, cize vsetko sa riesi hardwarovo na tej najnizsej urovni...
http://www.pc.ibm.com/us/security/userauth.html