From Laptops Wiki

The ThinkPad line of laptops was created in 1992 by IBM, who produced the laptops from 1992 to 2005, after which Chinese Lenovo acquired the ThinkPad brand.

ThinkPads are black and the design has been insipired by a Japanese lunch box. They are more business-oriented than your run-of-the-mill laptops and they're known for their security measures, which are notoriously hard to crack.

Security measures[edit]

A single ThinkPad laptop can have up to three different passwords: a power-on password (POP), a supervisor password (SVP) and a hard disk drive (HDD) password. There can also additionally be what is known as a "user password", which allows restricted access to BIOS; with the user password, the user isn't able to change things like boot order or the time and date.