Boolean logic uses True and False (or 1 and 0) to represent states that can only be one of two values.

Examples from real life:

- A door is open or closed

- A light is on or off

- A lock is locked or unlocked

In computing, Boolean logic is used in conditions inside if statements and loops:

```

IF fingerprint OR correctPIN THEN

unlock ← True

END IF

```

The three core Boolean operators are AND, OR, and NOT.